Description (CNA)
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allows a remote attacker, who has previously captured a user's refresh token, to replay that token even after it has been revoked.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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Red Hat / Red Hat build of Keycloak 26.4 | unaffected 26.4.13-1 before * |
| Red Hat / Red Hat build of Keycloak 26.4 | unaffected 26.4-19 before * |
| Red Hat / Red Hat build of Keycloak 26.4 | unaffected 26.4-19 before * |
| Red Hat / Red Hat build of Keycloak 26.4.13 | unaffected |
| Red Hat / Red Hat build of Keycloak 26.6 | unaffected 26.6.3-3 before * |
| Red Hat / Red Hat build of Keycloak 26.6 | unaffected 26.6-6 before * |
| Red Hat / Red Hat build of Keycloak 26.6 | unaffected 26.6-6 before * |
| Red Hat / Red Hat build of Keycloak 26.6.3 | unaffected |
CWE
CWE-613
References
- https://access.redhat.com/errata/RHSA-2026:25097
- https://access.redhat.com/errata/RHSA-2026:25098
- https://access.redhat.com/errata/RHSA-2026:30049
- https://access.redhat.com/errata/RHSA-2026:30050
- https://access.redhat.com/security/cve/CVE-2026-9802
- https://bugzilla.redhat.com/show_bug.cgi?id=2482467
ADP enrichment
No English description supplied.
No references supplied.