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4.9 Moyenne

CVE-2026-9801 A flaw was found in Keycloak

Description

A flaw was found in Keycloak. A remote attacker with high privileges, such as a realm administrator configuring a malicious Lightweight Directory Access Protocol (LDAP) server or an attacker compromising an upstream LDAP server, could exploit this vulnerability. By sending a malformed LDAP password policy response during a password authentication request, the attacker can trigger an OutOfMemoryError. This causes the Keycloak Java Virtual Machine (JVM) to terminate, leading to a denial of service (DoS) for all realms on the affected node.

Produits et versions touchés

Produit Versions touchées Corrigé en
Red Hat Build of Keycloak Versions non publiées
Red Hat build of Keycloak 26.6.3 Versions non publiées
Red Hat build of Keycloak 26.6 26.6 premières → < 26.6-6 26.6-6
Red Hat build of Keycloak 26.6.4 Versions non publiées
Red Hat build of Keycloak 26.4 26.4 premières → < 26.4-19 26.4-19
Red Hat build of Keycloak 26.4.13 Versions non publiées

Références

Chronologie

  1. Publiée
  2. Dernière modification

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CVE-2026-97847 Keycloak-services: keycloak-services: client manager can substitute sessionless token principal via hardcoded-claim mappers to obtain realm administrator authority 7.1 Élevée CVE-2026-97175 Keycloak-services: keycloak-services: unverified idp email auto-linking enables account takeover 8.8 Élevée CVE-2026-97174 Keycloak-services: keycloak-services: ciba sub parameter injection causes attacker authentication to issue victim tokens 6.8 Moyenne CVE-2026-96453 Org.keycloak/keycloak-admin-cli: keycloak-admin-cli: kcadm custom truststore accepts arbitrary self-signed certificates 8.0 Élevée
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