8.1
Élevée
CVE-2026-11800 A flaw was found in Keycloak
Description
A flaw was found in Keycloak. This JWT algorithm confusion vulnerability in the JWT Authorization Grant flow allows an attacker with valid client credentials to bypass signature verification. By forging an assertion, the attacker can create unauthorized access tokens. This enables the attacker to impersonate any federated user linked to the affected Identity Provider, leading to unauthorized access and potential privilege escalation.
Produits et versions touchés
| Produit | Versions touchées | Corrigé en |
|---|---|---|
| Red Hat build of Keycloak 26.6 26.6 | premières → < 26.6-8 | 26.6-8 |
| Red Hat build of Keycloak 26.6.4 | Versions non publiées | |
| Red Hat Build of Keycloak | Versions non publiées | |
| Red Hat Data Grid 8 | Versions non publiées | |
| Red Hat JBoss Enterprise Application Platform Expansion Pack | Versions non publiées | |
| Red Hat Single Sign-On 7 | Versions non publiées |
Autres CVE de Red Hat build of Keycloak 26.6
Les 127 CVE de Red Hat build of Keycloak 26.6 →
CVE-2026-97848
Keycloak-services: keycloak-services: protocol mapper with jsontype=json bypasses token sanitization
6.5
Moyenne
CVE-2026-97367
Keycloak-services: keycloak-services: dcr azp and sid claim substitution allows account rest session takeover
6.4
Moyenne
CVE-2026-96547
Keycloak-services: keycloak-services: dcr registration-time claim-path gap allows forging realm_access.roles
6.5
Moyenne
CVE-2026-96460
Keycloak-services: keycloak-services: indefinite access token renewal via standard token exchange v2
5.4
Moyenne