VULNERABILITY INTELLIGENCE

CVE-2026-9802

CVSS score6.8 MEDIUM
EPSS probability0.30%
CISA KEVNot currently listed
Published2026-05-28
Last modified2026-10-26
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N

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allows a remote attacker, who has previously captured a user's refresh token, to replay that token even after it has been revoked.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.

Weakness classification

  • secalert@redhat.com: CWE-613

Primary references