Description (CNA)
A flaw was found in Keycloak. When deployed in stateless mode with MySQL or MariaDB, a mismatch in row-count semantics between the database driver and Keycloak's application logic allows an attacker to bypass replay protection. This vulnerability enables an attacker who intercepts single-use security artifacts, such as JWT client assertions, DPoP proofs, or one-time password (TOTP) codes, to replay them. Successful exploitation grants unauthorized access to the token endpoint or login flow.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Keycloak / Keycloak | affected 26.7.0 before 26.7.4 |
| Red Hat / Red Hat Build of Keycloak | unaffected |
| Red Hat / Red Hat Build of Keycloak | unaffected |
CWE
CWE-294
References
- https://access.redhat.com/security/cve/CVE-2026-90997
- https://bugzilla.redhat.com/show_bug.cgi?id=2533141
ADP enrichment
No English description supplied.
No references supplied.