5.4
Moyenne
CVE-2026-16093 Keycloak provides a mechanism called Client Policies to enforce security requirements on clients, such as requiring them…
Description
Keycloak provides a mechanism called Client Policies to enforce security requirements on clients, such as requiring them to use signed JWTs for authentication. A flaw was discovered where this enforcement can be bypassed. An attacker with valid client credentials can provide a fake, unsigned assertion header that tricks the system into thinking the policy requirements have been met. This allows the attacker to authenticate using simpler methods like a client secret even when the administrator has mandated more secure, signed assertions.
Produits et versions touchés
| Produit | Versions touchées | Corrigé en |
|---|---|---|
| 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 | |
| Red Hat build of Keycloak 26.6 26.6 | premières → < 26.6-20 | 26.6-20 |
| Red Hat build of Keycloak 26.6.7 | Versions non publiées |
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6.4
Moyenne