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GHSA-v5g5-wwmp-jppw

Keycloak has Insufficient Session Expiration

Source: GitHub Advisory Database (reviewed) Moderate CVE-2026-9802

Packages

EcosystemPackageAffectedFixed in
Maven org.keycloak:keycloak-services <= 26.4.7 no fix listed
Maven org.keycloak:keycloak-services >= 26.5.0, < 26.6.3 26.6.3

Details

As written in the advisory (Markdown source, shown as plain text).

A flaw was found in Keycloak. When revokeRefreshToken=true is enabled and persistent session storage is in use, a server restart can reset internal timing mechanisms. This allows a remote attacker, who has previously captured a user's refresh token, to replay that token even after it has been revoked. Successful exploitation grants the attacker unauthorized access to the victim's account, potentially leading to information disclosure or privilege escalation.

References

External links from the advisory. They lead to third-party sites.