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CVE-2026-15572 A flaw was found in Keycloak's Dynamic Client Registration (DCR) security policy management

Description

A flaw was found in Keycloak's Dynamic Client Registration (DCR) security policy management. The "Allowed Protocol Mapper Types" policy, which restricts which types of data mappers a client can use, fails to re-validate the mapper type during a client update if the mapper's configuration remains unchanged. An attacker with client registration privileges can exploit this by first registering an allowed mapper type with a malicious configuration and then swapping it for a restricted, high-privilege mapper type (such as one that hardcodes administrative roles). This allows the attacker to gain full administrative access to the Keycloak realm.

Produits et versions touchés

Produit Versions touchées Corrigé en
Red Hat Build of Keycloak Versions non publiées
Red Hat build of Keycloak 26.4 26.4 premières → < 26.4-22 26.4-22
Red Hat build of Keycloak 26.4.14 Versions non publiées
Red Hat build of Keycloak 26.6 26.6 premières → < 26.6-11 26.6-11
Red Hat build of Keycloak 26.6.5 Versions non publiées

Références

Chronologie

  1. Publiée
  2. Dernière modification

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CVE-2026-9797 Keycloak: keycloak: privilege escalation via client authentication manipulation by an authenticated administrator 6.5 Moyenne CVE-2026-97848 Keycloak-services: keycloak-services: protocol mapper with jsontype=json bypasses token sanitization 6.5 Moyenne CVE-2026-97367 Keycloak-services: keycloak-services: dcr azp and sid claim substitution allows account rest session takeover 6.4 Moyenne CVE-2026-96547 Keycloak-services: keycloak-services: dcr registration-time claim-path gap allows forging realm_access.roles 6.5 Moyenne
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