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 |
Références
- RHSA-2026:30083 access.redhat.com
- RHSA-2026:30084 access.redhat.com
- access.redhat.com access.redhat.com
- RHBZ#2487006 bugzilla.redhat.com
Chronologie
- Publiée
- Dernière modification
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