CVE-2026-9802
MEDIUM
NVD
CVSS Score
6.8
Severity
MEDIUM
Published
May 28, 2026
Vendor
unknown
Description
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allows a remote attacker, who has previously captured a user's refresh token, to replay that token even after it has been revoked.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.