{"id":"CVE-2026-97174","aliases":[],"cve":{"records":[{"id":"CVE-2026-97174","source":"redhat","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-09-24T05:29:37.511Z","published":"2026-11-05T17:15:54.587Z","modified":"2026-11-06T17:12:36.994Z"}],"publishers":[{"name":"redhat","role":"CNA","organizationId":"53f830b8-0a3f-465b-8143-3b8a9948e749","modified":"2026-11-06T17:12:36.994Z"},{"name":"CISA-ADP","role":"ADP","organizationId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","modified":"2026-11-05T20:58:34.387Z"}],"references":[{"url":"https://access.redhat.com/errata/RHSA-2026:95761","tags":["vendor-advisory","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://access.redhat.com/errata/RHSA-2026:95762","tags":["vendor-advisory","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://access.redhat.com/security/cve/CVE-2026-97174","tags":["vdb-entry","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2539961","tags":["issue-tracking","x_refsource_REDHAT"],"source":"redhat"}],"weaknesses":[{"id":"CWE-20","description":"Improper Input Validation","source":"redhat"}],"applicability":[],"prioritization":[{"source":"CISA-ADP","type":"SSVC","role":"CISA Coordinator","timestamp":"2026-11-05T20:58:27.807112Z","decisions":[{"name":"Exploitation","value":"none"},{"name":"Automatable","value":"no"},{"name":"Technical Impact","value":"total"}]}]},"title":"Keycloak-services: keycloak-services: ciba sub parameter injection causes attacker authentication to issue victim tokens","titleSource":"redhat","descriptionSource":"redhat","description":"A flaw was found in the Client-Initiated Backchannel Authentication (CIBA) implementation of Keycloak. The CIBA endpoint fails to properly validate the sub parameter, allowing it to be stored as an additional request parameter. During the token issuance process, this injected value overwrites the legitimate subject identifier. This allows an attacker to authenticate as themselves but receive security tokens belonging to a different victim user, leading to unauthorized account access.","score":6.8,"severity":"medium","published":"2026-11-05T17:15:54.587Z","modified":"2026-11-06T17:12:36.994Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"Red Hat","name":"Red Hat build of Keycloak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-2026-97174"},{"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-2026-97174"},{"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-2026-97174"},{"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-2026-97174"},{"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-2026-97174"},{"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-2026-97174"}],"remediation":[{"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-2026-97174"}],"references":["https://access.redhat.com/errata/RHSA-2026:95761","https://access.redhat.com/errata/RHSA-2026:95762","https://access.redhat.com/security/cve/CVE-2026-97174","https://bugzilla.redhat.com/show_bug.cgi?id=2539961"],"sources":[{"name":"CVE","id":"CVE-2026-97174","modified":"2026-11-06T17:12:36.994Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-97174"}],"assessments":[{"source":"redhat","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N","score":6.8}],"sourceAffected":[],"observedAt":"2026-11-06T18:03:41.704Z","kev":{"status":"not-listed","checkedAt":"2026-11-14T21:25:33.720Z"},"coverage":[{"source":"NVD","status":"available","checkedAt":"2026-11-06T10:35:33.891Z","attemptedAt":"2026-11-06T10:35:33.891Z"},{"source":"GHSA","status":"available","checkedAt":"2026-11-06T10:35:33.597Z","attemptedAt":"2026-11-06T10:35:33.597Z"},{"source":"EUVD","status":"available","checkedAt":"2026-11-06T10:35:33.597Z","attemptedAt":"2026-11-06T10:35:33.597Z"},{"source":"EPSS","status":"no-result","checkedAt":"2026-11-06T10:35:33.068Z","attemptedAt":"2026-11-06T10:35:33.068Z"}],"evidence":[{"source":"ENISA EUVD","id":"EUVD-2026-117610","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-117610","modified":"Nov 5, 2026, 8:58:34 PM","score":6.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N","checkedAt":"2026-11-06T10:35:33.597Z"},{"source":"GitHub Advisory Database","id":"GHSA-42wm-mqj8-5cwr","url":"https://github.com/advisories/GHSA-42wm-mqj8-5cwr","modified":"2026-11-05T18:33:27Z","score":6.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N","checkedAt":"2026-11-06T10:35:33.597Z"},{"source":"NVD","id":"CVE-2026-97174","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-97174","modified":"2026-11-05T21:18:54.650","score":6.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N","checkedAt":"2026-11-06T10:35:33.891Z"}],"aiSummary":{"text":"A flaw in Keycloak's Client-Initiated Backchannel Authentication (CIBA) implementation allows attackers to authenticate as themselves but receive security tokens belonging to a different victim user. The CIBA endpoint fails to properly validate the sub parameter. The affected product is Red Hat build of Keycloak 26.6, but the exact affected versions are unclear.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-11-06T18:41:36.442Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-97174"}]}}