Keycloak: Revoked Tokens Can Remain Active When Both Realm-Level and Client-Level `notBefore` Revocation Policies are Configured

中 5.4CVE-2026-8922 · GHSA-83c4-ffjp-mxp9 · 19/05/2026 公開 · 23/07/2026 更新

要点

CVE-2026-8922 は org.keycloak:keycloak-services に影響する深刻度「中」 (CVSS 5.4) の脆弱性です。
今後30日間に悪用される確率（EPSS）：0.28%（全脆弱性の 20.6% より高い）。
修正版の情報はまだありません。参考情報のベンダー勧告を確認してください。

パッケージ	影響を受けるバージョン	修正済みバージョン
org.keycloak:keycloak-services Maven	`≤ 26.6.2`	修正版なし

概要

A flaw was found in Keycloak. When both realm-level and client-level notBefore revocation policies are configured, Keycloak's OpenID Connect (OIDC) Introspection feature fails to properly honor the realm-level policy. This allows tokens that should have been revoked to remain active, potentially leading to unauthorized access or continued session validity. This could impact the security of systems utilizing Keycloak for identity and access management.

NVD の説明

A flaw was found in Keycloak. When both realm-level and client-level `notBefore` revocation policies are configured, Keycloak's OpenID Connect (OIDC) Introspection feature fails to properly honor the realm-level policy. This allows tokens that should have been revoked to remain active, potentially leading to unauthorized access or continued session validity. This could impact the security of systems utilizing Keycloak for identity and access management.