CVE-2026-93998

Keycloak-core: keycloak-core: saml adapter does not bind signed assertions to the configured identity provider issuer

Products / packages Red Hat build of Keycloak 26.4 · Red Hat build of Keycloak 26.4.17 · Red Hat build of Keycloak 26.6 · 8 more

Published 05/11/2026, 17:15:33 UTC

Severity and exploitation

Not in CISA KEV

KEV coverage does not rule out exploitation.

KEV checked 14/11/2026, 21:55:35 UTC

redhat · CVSS:3.1 · 7.4

Assessment vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Severity

high7.4

CVSS measures technical severity, not the likelihood of an attack.

Known exploitation

Not listed in the checked CISA KEV catalog

Absence from CISA KEV does not rule out attacks.

Public exploit

Not established by this record

Missing evidence does not mean no public exploit exists.

Remediation

Source guidance available

Review the recorded instructions. Guidance may be a workaround rather than a fixed version.

What this means

A flaw in Keycloak's SAML adapter fails to verify the issuer of a signed SAML assertion, potentially allowing an attacker to log in as any user. The affected product is Red Hat build of Keycloak, but the exact affected versions are unclear. An attacker who controls an identity provider with a shared trusted signing key may exploit this weakness.

Summarized by @cf/meta/llama-3.3-70b-instruct-fp8-fast. Verify details against the original sources.

Attack conditions

No attack-condition excerpt has been identified here. Review the full source description and references for authentication, network access, and configuration requirements.

Review supporting sources →

Affected versions

Check the exact model, release, and any platform requirements against your installation.

Red Hat · redhat

Red Hat build of Keycloak 26.4

1 range

redhat version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

unaffected

26.4.17-2 → before *

rpm versions

Other versions: affected

Product identifiers (CPE)

cpe:/a:redhat:build_keycloak:26.4::el9

Red Hat · redhat

Red Hat build of Keycloak 26.4

1 range

redhat version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

unaffected

26.4-29 → before *

rpm versions

Other versions: affected

Product identifiers (CPE)

cpe:/a:redhat:build_keycloak:26.4::el9

Red Hat · redhat

Red Hat build of Keycloak 26.4

1 range

redhat version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

unaffected

26.4-30 → before *

rpm versions

Other versions: affected

Product identifiers (CPE)

cpe:/a:redhat:build_keycloak:26.4::el9

Red Hat · redhat

Red Hat build of Keycloak 26.4.17

0 ranges

redhat version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

Other versions: unaffected

Product identifiers (CPE)

cpe:/a:redhat:build_keycloak:26.4::el9

Red Hat · redhat

Red Hat build of Keycloak 26.4.17

0 ranges

redhat version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

Other versions: unaffected

Product identifiers (CPE)

cpe:/a:redhat:build_keycloak:26.4::el9

Red Hat · redhat

Red Hat build of Keycloak 26.4.17

0 ranges

redhat version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

Other versions: unaffected

Product identifiers (CPE)

cpe:/a:redhat:build_keycloak:26.4::el9

Red Hat · redhat

Red Hat build of Keycloak 26.4.17

0 ranges

redhat version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

Other versions: unaffected

Product identifiers (CPE)

cpe:/a:redhat:build_keycloak:26.4::el9

Red Hat · redhat

Red Hat build of Keycloak 26.4.17

0 ranges

redhat version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

Other versions: unaffected

Product identifiers (CPE)

cpe:/a:redhat:build_keycloak:26.4::el9

Red Hat · redhat

Red Hat build of Keycloak 26.6

1 range

redhat version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

unaffected

26.6.8-2 → before *

rpm versions

Other versions: affected

Product identifiers (CPE)

cpe:/a:redhat:build_keycloak:26.6::el9

Red Hat · redhat

Red Hat build of Keycloak 26.6

1 range

redhat version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

unaffected

26.6-24 → before *

rpm versions

Other versions: affected

Product identifiers (CPE)

cpe:/a:redhat:build_keycloak:26.6::el9

Red Hat · redhat

Red Hat build of Keycloak 26.6

1 range

redhat version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

unaffected

26.6-24 → before *

rpm versions

Other versions: affected

Product identifiers (CPE)

cpe:/a:redhat:build_keycloak:26.6::el9

Red Hat · redhat

Red Hat build of Keycloak 26.6.8

0 ranges

redhat version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

Other versions: unaffected

Product identifiers (CPE)

cpe:/a:redhat:build_keycloak:26.6::el9

Red Hat · redhat

Red Hat build of Keycloak 26.6.8

0 ranges

redhat version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

Other versions: unaffected

Product identifiers (CPE)

cpe:/a:redhat:build_keycloak:26.6::el9

Red Hat · redhat

Red Hat build of Keycloak 26.6.8

0 ranges

redhat version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

Other versions: unaffected

Product identifiers (CPE)

cpe:/a:redhat:build_keycloak:26.6::el9

Red Hat · redhat

Red Hat build of Keycloak 26.6.8

0 ranges

redhat version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

Other versions: unaffected

Product identifiers (CPE)

cpe:/a:redhat:build_keycloak:26.6::el9

Red Hat · redhat

Red Hat build of Keycloak 26.6.8

0 ranges

redhat version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

Other versions: unaffected

Product identifiers (CPE)

cpe:/a:redhat:build_keycloak:26.6::el9

Red Hat · redhat

Red Hat AMQ Broker 7

0 ranges

redhat version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

Other versions: unaffected

Product identifiers (CPE)

cpe:/a:redhat:amq_broker:7

Red Hat · redhat

Red Hat Fuse 7

0 ranges

redhat version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

Other versions: unaffected

Product identifiers (CPE)

cpe:/a:redhat:jboss_fuse:7

Red Hat · redhat

Red Hat JBoss Enterprise Application Platform 7

0 ranges

redhat version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

Other versions: unaffected

Product identifiers (CPE)

cpe:/a:redhat:jboss_enterprise_application_platform:7

Red Hat · redhat

Red Hat JBoss Enterprise Application Platform 7

0 ranges

redhat version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

Other versions: unaffected

Product identifiers (CPE)

cpe:/a:redhat:jboss_enterprise_application_platform:7

Red Hat · redhat

Red Hat JBoss Enterprise Application Platform 7

0 ranges

redhat version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

Other versions: unaffected

Product identifiers (CPE)

cpe:/a:redhat:jboss_enterprise_application_platform:7

Red Hat · redhat

Red Hat JBoss Enterprise Application Platform 8

0 ranges

redhat version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

Other versions: unaffected

Product identifiers (CPE)

cpe:/a:redhat:jboss_enterprise_application_platform:8

Red Hat · redhat

Red Hat JBoss Enterprise Application Platform Expansion Pack

0 ranges

redhat version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

Other versions: unaffected

Product identifiers (CPE)

cpe:/a:redhat:jbosseapxp

Red Hat · redhat

Red Hat Satellite 6

0 ranges

redhat version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

Other versions: unaffected

Product identifiers (CPE)

cpe:/a:redhat:satellite:6

Red Hat · redhat

Red Hat Single Sign-On 7

0 ranges

redhat version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

Other versions: unaffected

Product identifiers (CPE)

cpe:/a:redhat:red_hat_single_sign_on:7

Automatic dependency matching is unavailable for this record. Use the product evidence and publisher’s instructions to check your installation.

What to do

Compare your installed product and version with the affected versions above. A matching product name alone does not confirm exposure.

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

--- CME Mitigation Guidance (2026-11-06) --- Disclaimer: The following mitigation solutions are provided as a courtesy, pending the application of an official patch. This content was generated utilizing AI tools in conjunction with data from https://cmetaxonomy.org. Customers are advised to independently evaluate and test these temporary mitigations within their own infrastructure.

The highest-value action is to enforce strict verification of the SAML assertion Issuer attribute against the configured identity provider entity ID in the Keycloak SAML adapter: upgrade to Red Hat build of Keycloak 26.4.17, 26.6.8 (or the corresponding fixed Red Hat builds), which verify that the Issuer attribute in the received SAML response and assertion strictly matches the configured identity provider entity ID, closing all 2 injection vectors (cross-tenant SAML assertion injection, shared-key sibling issuer assertion forging). Until patched, this is a concern on Applications secured using the Keycloak SAML adapter where signing keys are shared across multiple identity providers or tenants, so Ensure signing keys are strictly isolated per identity provider and never shared across multiple issuers or tenants. These controls limit blast radius and contain exploitation, but they do not fix the underlying missing SAML issuer validation defect — apply the upstream patch to fully remediate.

Highest-impact CME: CME-1315 Allowlist-Preferred Input Validation (Deny-by-Default Filtering) (high)

redhat guidance ↗

cve.new guidance unless attributed to a publisher. This page does not inspect your installation.

Public exploit evidence

No public exploit reference is identified in the imported evidence. This is not a claim that no exploit exists.

Original source description

Read the full publisher description

A flaw was found in the SAML adapter component of Keycloak, which is used to secure applications with SAML-based authentication. The adapter fails to verify that the issuer of a signed SAML assertion matches the expected identity provider configured for the application. If multiple identity providers share the same trusted signing key, an attacker who controls one of those providers can create a validly signed assertion to log into the application as any user, potentially gaining full administrative control.

References

6 sources

access.redhat.com/errata/RHSA-2026:95759

Vendor advisoryredhat

access.redhat.com/errata/RHSA-2026:95760

Vendor advisoryredhat

access.redhat.com/errata/RHSA-2026:95761

Vendor advisoryredhat

access.redhat.com/errata/RHSA-2026:95762

Vendor advisoryredhat

access.redhat.com/security/cve/CVE-2026-93998

Security advisoryredhat

bugzilla.redhat.com/show_bug.cgi

Source referenceredhat

Inside the record

Evidence available

Package identity · not supplied

Version evidence

Remediation guidance

Weakness classification

Additional publishers

Describes the evidence in this view, not whether the product is safe.

Original records

CVE-2026-93998

View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.

cve.new JSON →

Underlying weaknesses

The source’s classification of what caused the vulnerability.

CWE-347 ↗

Improper Verification of Cryptographic Signature

redhat

Contributing organizations · 2

redhat

Assigning organization

2026-11-06

CISA-ADP

Additional data publisher

2026-11-05

Timeline

All times UTC

5 Nov 2026, 17:15
Advisory published
Publication date supplied by the source.
6 Nov 2026, 19:44
Source updated
Latest modification date supplied by the source.
6 Nov 2026, 20:05
Last imported by cve.new
Latest catalog import, not the date we first saw this advisory.

What changed

Follow changes

CVE · CVE-2026-939982026-11-06

Observed 2026-11-06T20:05:54.574Z · upstream updated 2026-11-06T19:44:41.265Z

Remediation guidance changed

before

[
  {
    "text": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.",
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  }
]

after

[
  {
    "text": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.\n\n--- CME Mitigation Guidance (2026-11-06) ---\nDisclaimer: The following mitigation solutions are provided as a courtesy, pending the application of an official patch. This content was generated utilizing AI tools in conjunction with data from https://cmetaxonomy.org. Customers are advised to independently evaluate and test these temporary mitigations within their own infrastructure.\n\nThe highest-value action is to enforce strict verification of the SAML assertion Issuer attribute against the configured identity provider entity ID in the Keycloak SAML adapter: upgrade to Red Hat build of Keycloak 26.4.17, 26.6.8 (or the corresponding fixed Red Hat builds), which verify that the Issuer attribute in the received SAML response and assertion strictly matches the configured identity provider entity ID, closing all 2 injection vectors (cross-tenant SAML assertion injection, shared-key sibling issuer assertion forging). Until patched, this is a concern on Applications secured using the Keycloak SAML adapter where signing keys are shared across multiple identity providers or tenants, so Ensure signing keys are strictly isolated per identity provider and never shared across multiple issuers or tenants. These controls limit blast radius and contain exploitation, but they do not fix the underlying missing SAML issuer validation defect — apply the upstream patch to fully remediate.\n\nHighest-impact CME: CME-1315 Allowlist-Preferred Input Validation (Deny-by-Default Filtering) (high)",
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  }
]

CVE · CVE-2026-939982026-11-06

Observed 2026-11-06T18:03:37.981Z · upstream updated 2026-11-06T17:12:32.728Z

Product or version evidence changed

before

[
  {
    "vendor": "Red Hat",
    "name": "Red Hat build of Keycloak 26.4",
    "platforms": [],
    "versions": [
      {
        "version": "26.4-29",
        "status": "unaffected",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/a:redhat:build_keycloak:26.4::el9"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat build of Keycloak 26.4",
    "platforms": [],
    "versions": [
      {
        "version": "26.4.17-2",
        "status": "unaffected",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/a:redhat:build_keycloak:26.4::el9"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat build of Keycloak 26.4",
    "platforms": [],
    "versions": [
      {
        "version": "26.4-30",
        "status": "unaffected",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/a:redhat:build_keycloak:26.4::el9"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat build of Keycloak 26.6.8",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:build_keycloak:26.6::el9"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat build of Keycloak 26.6.8",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:build_keycloak:26.6::el9"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat build of Keycloak 26.6.8",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:build_keycloak:26.6::el9"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat build of Keycloak 26.6.8",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:build_keycloak:26.6::el9"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat build of Keycloak 26.6.8",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:build_keycloak:26.6::el9"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat AMQ Broker 7",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:amq_broker:7"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat Fuse 7",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:jboss_fuse:7"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat JBoss Enterprise Application Platform 7",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:jboss_enterprise_application_platform:7"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat JBoss Enterprise Application Platform 7",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:jboss_enterprise_application_platform:7"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat JBoss Enterprise Application Platform 7",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:jboss_enterprise_application_platform:7"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat JBoss Enterprise Application Platform 8",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:jboss_enterprise_application_platform:8"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat JBoss Enterprise Application Platform Expansion Pack",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:jbosseapxp"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat Satellite 6",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:satellite:6"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat Single Sign-On 7",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:red_hat_single_sign_on:7"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  }
]

after

[
  {
    "vendor": "Red Hat",
    "name": "Red Hat build of Keycloak 26.4",
    "platforms": [],
    "versions": [
      {
        "version": "26.4.17-2",
        "status": "unaffected",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/a:redhat:build_keycloak:26.4::el9"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat build of Keycloak 26.4",
    "platforms": [],
    "versions": [
      {
        "version": "26.4-29",
        "status": "unaffected",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/a:redhat:build_keycloak:26.4::el9"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat build of Keycloak 26.4",
    "platforms": [],
    "versions": [
      {
        "version": "26.4-30",
        "status": "unaffected",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/a:redhat:build_keycloak:26.4::el9"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat build of Keycloak 26.4.17",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:build_keycloak:26.4::el9"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat build of Keycloak 26.4.17",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:build_keycloak:26.4::el9"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat build of Keycloak 26.4.17",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:build_keycloak:26.4::el9"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat build of Keycloak 26.4.17",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:build_keycloak:26.4::el9"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat build of Keycloak 26.4.17",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:build_keycloak:26.4::el9"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat build of Keycloak 26.6",
    "platforms": [],
    "versions": [
      {
        "version": "26.6.8-2",
        "status": "unaffected",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/a:redhat:build_keycloak:26.6::el9"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat build of Keycloak 26.6",
    "platforms": [],
    "versions": [
      {
        "version": "26.6-24",
        "status": "unaffected",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/a:redhat:build_keycloak:26.6::el9"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat build of Keycloak 26.6",
    "platforms": [],
    "versions": [
      {
        "version": "26.6-24",
        "status": "unaffected",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/a:redhat:build_keycloak:26.6::el9"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat build of Keycloak 26.6.8",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:build_keycloak:26.6::el9"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat build of Keycloak 26.6.8",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:build_keycloak:26.6::el9"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat build of Keycloak 26.6.8",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:build_keycloak:26.6::el9"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat build of Keycloak 26.6.8",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:build_keycloak:26.6::el9"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat build of Keycloak 26.6.8",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:build_keycloak:26.6::el9"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat AMQ Broker 7",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:amq_broker:7"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat Fuse 7",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:jboss_fuse:7"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat JBoss Enterprise Application Platform 7",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:jboss_enterprise_application_platform:7"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat JBoss Enterprise Application Platform 7",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:jboss_enterprise_application_platform:7"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat JBoss Enterprise Application Platform 7",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:jboss_enterprise_application_platform:7"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat JBoss Enterprise Application Platform 8",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:jboss_enterprise_application_platform:8"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat JBoss Enterprise Application Platform Expansion Pack",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:jbosseapxp"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat Satellite 6",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:satellite:6"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat Single Sign-On 7",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:red_hat_single_sign_on:7"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  }
]

References changed

before

[
  "https://access.redhat.com/errata/RHSA-2026:95760",
  "https://access.redhat.com/errata/RHSA-2026:95761",
  "https://access.redhat.com/security/cve/CVE-2026-93998",
  "https://bugzilla.redhat.com/show_bug.cgi?id=2537164"
]

after

[
  "https://access.redhat.com/errata/RHSA-2026:95759",
  "https://access.redhat.com/errata/RHSA-2026:95760",
  "https://access.redhat.com/errata/RHSA-2026:95761",
  "https://access.redhat.com/errata/RHSA-2026:95762",
  "https://access.redhat.com/security/cve/CVE-2026-93998",
  "https://bugzilla.redhat.com/show_bug.cgi?id=2537164"
]

CVE · CVE-2026-939982026-11-06

Observed 2026-11-06T10:31:08.904Z · upstream updated 2026-11-06T10:23:50.472Z

Product or version evidence changed

before

[
  {
    "vendor": "Red Hat",
    "name": "Red Hat AMQ Broker 7",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:amq_broker:7"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat Build of Keycloak",
    "platforms": [],
    "versions": [],
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/a:redhat:build_keycloak:"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat Build of Keycloak",
    "platforms": [],
    "versions": [],
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/a:redhat:build_keycloak:"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat Build of Keycloak",
    "platforms": [],
    "versions": [],
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/a:redhat:build_keycloak:"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat Build of Keycloak",
    "platforms": [],
    "versions": [],
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/a:redhat:build_keycloak:"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat Build of Keycloak",
    "platforms": [],
    "versions": [],
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/a:redhat:build_keycloak:"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat Fuse 7",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:jboss_fuse:7"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat JBoss Enterprise Application Platform 7",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:jboss_enterprise_application_platform:7"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat JBoss Enterprise Application Platform 7",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:jboss_enterprise_application_platform:7"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat JBoss Enterprise Application Platform 7",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:jboss_enterprise_application_platform:7"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat JBoss Enterprise Application Platform 8",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:jboss_enterprise_application_platform:8"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat JBoss Enterprise Application Platform Expansion Pack",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:jbosseapxp"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat Satellite 6",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:satellite:6"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat Single Sign-On 7",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:red_hat_single_sign_on:7"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  }
]

after

[
  {
    "vendor": "Red Hat",
    "name": "Red Hat build of Keycloak 26.4",
    "platforms": [],
    "versions": [
      {
        "version": "26.4-29",
        "status": "unaffected",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/a:redhat:build_keycloak:26.4::el9"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat build of Keycloak 26.4",
    "platforms": [],
    "versions": [
      {
        "version": "26.4.17-2",
        "status": "unaffected",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/a:redhat:build_keycloak:26.4::el9"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat build of Keycloak 26.4",
    "platforms": [],
    "versions": [
      {
        "version": "26.4-30",
        "status": "unaffected",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/a:redhat:build_keycloak:26.4::el9"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat build of Keycloak 26.6.8",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:build_keycloak:26.6::el9"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat build of Keycloak 26.6.8",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:build_keycloak:26.6::el9"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat build of Keycloak 26.6.8",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:build_keycloak:26.6::el9"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat build of Keycloak 26.6.8",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:build_keycloak:26.6::el9"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat build of Keycloak 26.6.8",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:build_keycloak:26.6::el9"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat AMQ Broker 7",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:amq_broker:7"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat Fuse 7",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:jboss_fuse:7"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat JBoss Enterprise Application Platform 7",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:jboss_enterprise_application_platform:7"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat JBoss Enterprise Application Platform 7",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:jboss_enterprise_application_platform:7"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat JBoss Enterprise Application Platform 7",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:jboss_enterprise_application_platform:7"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat JBoss Enterprise Application Platform 8",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:jboss_enterprise_application_platform:8"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat JBoss Enterprise Application Platform Expansion Pack",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:jbosseapxp"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat Satellite 6",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:satellite:6"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat Single Sign-On 7",
    "platforms": [],
    "versions": [],
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:red_hat_single_sign_on:7"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-93998"
  }
]

References changed

before

[
  "https://access.redhat.com/security/cve/CVE-2026-93998",
  "https://bugzilla.redhat.com/show_bug.cgi?id=2537164"
]

after

[
  "https://access.redhat.com/errata/RHSA-2026:95760",
  "https://access.redhat.com/errata/RHSA-2026:95761",
  "https://access.redhat.com/security/cve/CVE-2026-93998",
  "https://bugzilla.redhat.com/show_bug.cgi?id=2537164"
]

Large field values are marked as truncated previews. Original source snapshots remain retained.

Showing up to 50 most recent observed changes.

Reading the signals

Severity · CVSS: Technical impact and attack conditions. The headline is the highest imported catalog score; sources may disagree.
Observed exploitation · KEV: An absent or unavailable KEV listing does not establish that exploitation has not occurred.
Predicted exploitation · EPSS: No EPSS estimate available in this record.

CISA-ADP · SSVC

CISA Coordinator · 2026-11-05

Exploitation: none
Automatable: no
Technical Impact: total

SSVC describes the publisher’s decision context. Your organization’s exposure and priorities may differ.

Record identifiers

Aliases: None recorded

Source evidence

Request a correction or dispute

Start with the assigning organization for this record. Include the CVE ID, the disputed information, and supporting evidence. A dispute does not itself reject a record.

Find the responsible CNA →Official dispute and escalation process ↗

CVE CVE-2026-93998

Enrichment coverage

NVDAvailable

Checked 06/11/2026, 10:35:37 UTC

GHSAAvailable

Checked 06/11/2026, 10:35:36 UTC

EUVDAvailable

Checked 06/11/2026, 10:35:39 UTC

EPSSNo result

Checked 06/11/2026, 10:35:35 UTC

Additional source evidence

GitHub Advisory Database · GHSA-rxhm-ghrc-q7h4

CVSS 7.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Checked 06/11/2026, 10:35:36 UTC

NVD · CVE-2026-93998

CVSS 7.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Checked 06/11/2026, 10:35:37 UTC

ENISA EUVD · EUVD-2026-117608

CVSS 7.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Checked 06/11/2026, 10:35:39 UTC

Sponsored by MoxsoBuild security habits with adaptive training and phishing simulations.View as JSON

Keycloak-core: keycloak-core: saml adapter does not bind signed assertions to the configured identity provider issuer

Severity and exploitation

What this means

Attack conditions

Affected versions

Red Hat build of Keycloak 26.4

affected

unaffected

unknown

Red Hat build of Keycloak 26.4

affected

unaffected

unknown

Red Hat build of Keycloak 26.4

affected

unaffected

unknown

Red Hat build of Keycloak 26.4.17

affected

unaffected

unknown

Red Hat build of Keycloak 26.4.17

affected

unaffected

unknown

Red Hat build of Keycloak 26.4.17

affected

unaffected

unknown

Red Hat build of Keycloak 26.4.17

affected

unaffected

unknown

Red Hat build of Keycloak 26.4.17

affected

unaffected

unknown

Red Hat build of Keycloak 26.6

affected

unaffected

unknown

Red Hat build of Keycloak 26.6

affected

unaffected

unknown

Red Hat build of Keycloak 26.6

affected

unaffected

unknown

Red Hat build of Keycloak 26.6.8

affected

unaffected

unknown

Red Hat build of Keycloak 26.6.8

affected

unaffected

unknown

Red Hat build of Keycloak 26.6.8

affected

unaffected

unknown

Red Hat build of Keycloak 26.6.8

affected

unaffected

unknown

Red Hat build of Keycloak 26.6.8

affected

unaffected

unknown

Red Hat AMQ Broker 7

affected

unaffected

unknown

Red Hat Fuse 7

affected

unaffected

unknown

Red Hat JBoss Enterprise Application Platform 7

affected

unaffected