A flaw was found in Keycloak. The Dynamic Client Registration (DCR) endpoint does not properly validate authorization when processing the deprecated defaultRoles field. An authenticated attacker with client creation privileges or an Initial Access Token (IAT) can inject excessive roles into the realm's default roles configuration. This causes clients across the realm to generate bloated access tokens, resulting in performance and memory degradation that can lead to a Denial of Service (DoS).

A flaw was found in Keycloak. The Dynamic Client Registration (DCR) endpoint does not properly validate authorization when processing the deprecated defaultRoles field. An authenticated attacker with client creation privileges or an Initial Access Token (IAT) can inject excessive roles into the realm's default roles configuration. This causes clients across the realm to generate bloated access tokens, resulting in performance and memory degradation that can lead to a Denial of Service (DoS).

org.bouncycastle/bcprov-jdk15on: org.bouncycastle/bcpkix-jdk15on: Bouncy Castle for Java: Name Constraints bypass via trailing dot in rfc822Name and URI keycloak-broker: Keycloak: Privilege escalation to realm administrator via improper authorization in identity provider mapper org.bouncycastle/bc-java: org.bouncycastle/bc-lts-java: Bouncy Castle for Java: Cryptographic signature bypass in RSA PKCS#1 verification bouncycastle: Bouncy Castle for Java: Denial of Service via lazy ASN.1 sequence processing keycloak-services: keycloak-services: OIDC IdP update reuses masked client secret after token URL change keycloak-services: keycloak-services: Incomplete fix for CIBA brute-force lockout bypass at token redemption keycloak-services: keycloak-services: Group policy extendChildren matches sibling group path prefixes keycloak-services: keycloak-services: Client policy source-host wildcard domain matching bypass keycloak-services: keycloak-services: Client policy source-group condition bypass via duplicate group name matching keycloak-services: keycloak-services: Inactive out-of-audience token introspection leaks signed JWT claim keycloak-services: keycloak-services: SAML HTTP-Redirect binding response preserves query string leading to parameter pollution keycloak-services: keycloak-services: OIDC backchannel logout accepts unsigned forged logout tokens keycloak-services: keycloak-services: Name-only group claims let same-name groups satisfy path-specific group policies wildfly-el…