Fiche vulnérabilité
CVE-2026-18967 : faille élevée redhat build of keycloak (CVSS 8.1)
Description
A flaw was found in the SAML broker component of Keycloak, an identity and access management solution. When configured as a SAML broker using the IdP-Initiated flow, Keycloak fails to enforce the OneTimeUse condition in SAML assertions. This allows an attacker who captures a valid, unused assertion to replay it multiple times. Successful exploitation could allow an attacker to hijack a user's session and gain unauthorized access to the system as that user.
En bref
- Sévérité
- Élevée (CVSS 8.1)
- Vecteur CVSS
- CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
- Exploitation active
- Non signalée par la CISA
- Publication
- 6 août 2026
- Dernière mise à jour
- 10 août 2026
Produits concernés
- redhat build of keycloak
- redhat jboss enterprise application platform expansion pack