VULNERABILITY INTELLIGENCE

CVE-2026-18218

CVSS score4.2 MEDIUM
EPSS probability0.29%
CISA KEVNot currently listed
Published2026-07-31
Last modified2026-09-16
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

Description

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. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

Weakness classification

  • secalert@redhat.com: CWE-862

Primary references