Vulnerability Details CVE-2026-18218
A flaw was found in the TokenManager component of the Keycloak identity management service. When an administrator attempts to revoke tokens for a specific application (client) using a "not-before" policy, the revocation may be silently ignored if the overall security realm already has an older, non-zero revocation policy in place. This issue can allow previously issued tokens to remain valid for refreshing sessions and accessing user information even after an administrator has attempted to invalidate them.
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Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 3.1%
CVSS Severity
CVSS v3 Score 4.2
References
Products affected by CVE-2026-18218
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cpe:2.3:a:redhat:build_of_keycloak:-