{"id":"CVE-2026-96447","aliases":[],"cve":{"records":[{"id":"CVE-2026-96447","source":"redhat","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-09-23T09:37:33.249Z","published":"2026-11-06T06:02:51.358Z","modified":"2026-11-06T17:36:13.779Z"}],"publishers":[{"name":"redhat","role":"CNA","organizationId":"53f830b8-0a3f-465b-8143-3b8a9948e749","modified":"2026-11-06T17:34:30.629Z"},{"name":"CISA-ADP","role":"ADP","organizationId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","modified":"2026-11-06T17:36:13.779Z"}],"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-2026-96447","tags":["vdb-entry","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2539288","tags":["issue-tracking","x_refsource_REDHAT"],"source":"redhat"}],"weaknesses":[{"id":"CWE-287","description":"Improper Authentication","source":"redhat"}],"applicability":[],"prioritization":[{"source":"CISA-ADP","type":"SSVC","role":"CISA Coordinator","timestamp":"2026-11-06T17:35:59.619599Z","decisions":[{"name":"Exploitation","value":"none"},{"name":"Automatable","value":"no"},{"name":"Technical Impact","value":"partial"}]}]},"title":"Keycloak-services: keycloak-services: stateless token preferred_username fallback enables identity rebinding","titleSource":"redhat","descriptionSource":"redhat","description":"A flaw was found in the TokenManager component of Keycloak, an open-source identity and access management solution. The issue occurs during the validation of stateless access tokens when the original user ID no longer exists. Keycloak incorrectly falls back to using the username to identify the user without verifying if the identity matches the original token subject. This could allow an attacker with an old token to gain access to a newly created service account if it shares the same client ID as a previously deleted one.","score":4.2,"severity":"medium","published":"2026-11-06T06:02:51.358Z","modified":"2026-11-06T17:36:13.779Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"Red Hat","name":"Red Hat build of Keycloak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-2026-96447"},{"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-2026-96447"},{"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-2026-96447"},{"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-2026-96447"},{"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-2026-96447"},{"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-2026-96447"}],"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-2026-96447"}],"references":["https://access.redhat.com/errata/RHSA-2026:95761","https://access.redhat.com/errata/RHSA-2026:95762","https://access.redhat.com/security/cve/CVE-2026-96447","https://bugzilla.redhat.com/show_bug.cgi?id=2539288"],"sources":[{"name":"CVE","id":"CVE-2026-96447","modified":"2026-11-06T17:36:13.779Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-96447"}],"assessments":[{"source":"redhat","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N","score":4.2}],"sourceAffected":[],"observedAt":"2026-11-06T17:56:39.592Z","kev":{"status":"not-listed","checkedAt":"2026-11-15T01:00:31.976Z"},"coverage":[{"source":"NVD","status":"available","checkedAt":"2026-11-06T09:20:34.313Z","attemptedAt":"2026-11-06T09:20:34.313Z"},{"source":"GHSA","status":"available","checkedAt":"2026-11-06T09:20:34.898Z","attemptedAt":"2026-11-06T09:20:34.898Z"},{"source":"EUVD","status":"available","checkedAt":"2026-11-06T09:20:33.844Z","attemptedAt":"2026-11-06T09:20:33.844Z"},{"source":"EPSS","status":"no-result","checkedAt":"2026-11-06T09:20:33.973Z","attemptedAt":"2026-11-06T09:20:33.973Z"}],"evidence":[{"source":"ENISA EUVD","id":"EUVD-2026-117917","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-117917","modified":"Nov 6, 2026, 6:02:51 AM","score":4.2,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N","checkedAt":"2026-11-06T09:20:33.844Z"},{"source":"NVD","id":"CVE-2026-96447","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-96447","modified":"2026-11-06T06:16:45.027","score":4.2,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N","checkedAt":"2026-11-06T09:20:34.313Z"},{"source":"GitHub Advisory Database","id":"GHSA-7frc-6h33-jg59","url":"https://github.com/advisories/GHSA-7frc-6h33-jg59","modified":"2026-11-06T06:30:30Z","score":4.2,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N","checkedAt":"2026-11-06T09:20:34.898Z"}],"aiSummary":{"text":"A flaw in Keycloak's TokenManager component allows an attacker with an old token to gain access to a newly created service account if it shares the same client ID as a previously deleted one. The issue occurs when the original user ID no longer exists and Keycloak falls back to using the username without verifying the identity. The affected product is Red Hat build of Keycloak 26.6.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-11-06T18:01:20.892Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-96447"}]}}