CVE-2026-97847
CVE-2026-97847
A flaw was found in the protocol mapper and identity resolution components of Keycloak. The issue occurs when a client manager uses hardcoded-claim mappers to override identity claims in sessionless service-account tokens. Because these tokens lack a session ID, Keycloak may incorrectly resolve the token bearer as a different, highly privileged user based on the manipulated claims. This can allow an attacker with limited client management permissions to impersonate a realm administrator and gain full control over the realm.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Weakness classification (CWE)
References
- RHSA-2026:95759 (vendor-advisory)
- RHSA-2026:95760 (vendor-advisory)
- RHSA-2026:95761 (vendor-advisory)
- RHSA-2026:95762 (vendor-advisory)
- access.redhat.com/security/cve/CVE-2026-97847 (vdb-entry)
- RHBZ#2540950 (issue-tracking)
Frequently asked questions
- What is CVE-2026-97847?
- CVE-2026-97847 is a high-severity vulnerability, classified under Improper Authentication. CVSS score: 7.1/10. Published 2026-11-05.
- How severe is CVE-2026-97847?
- High severity. CVSS v3 base score is 7.1 out of 10.