Fiche vulnérabilité
CVE-2026-18215 : faille élevée redhat build of keycloak (CVSS 8.1)
Description
Keycloak provides a way to let users log in using Microsoft accounts while restricting access to a specific organization (tenant). A flaw was discovered where this restriction is ignored when using the token exchange feature. This means an attacker with a valid Microsoft token from a completely different organization could gain access to the Keycloak realm, potentially accessing sensitive data or performing unauthorized actions.
En bref
- Sévérité
- Élevée (CVSS 8.1)
- Vecteur CVSS
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
- Exploitation active
- Non signalée par la CISA
- Publication
- 31 juil. 2026
- Dernière mise à jour
- 16 sept. 2026
Produits concernés
- redhat build of keycloak