CVE-2026-82968

A flaw was found in the first-broker-login flow of the Keycloak identity management service. When a user links a social identity provider account to their local account, the verification proof generated is not strictly bound to the specific upstream identity being verified. This allows an attacke...

CVE-2026-82968

Keycloak identity management service has a flaw in the first-broker-login flow that enables account takeover via social identity provider linking. The verification proof (described in the CVE list as a cross-session email verification proof ) is not strictly bound to the specific upstream identit...

CVE-2026-9087: Authorization Bypass Through User-Controlled Key

A flaw was found in Keycloak. The cross-session verification proof is keyed only by local userId, idpAlias and is not bound to the upstream identity that was actually verified, so a second upstream account on the same IdP can consume it and get linked to the victim's local account...