CVE-2026-92857 | BDVDB-2026-400615 Detail

Description#

Keycloak provides a Dynamic Client Registration feature that allows users with specific tokens to register their own applications. A flaw in how Keycloak validates these registration requests allows an attacker to create a malicious application that forges identity information. By mapping their own user profile details to protected fields like the user ID (sub) or intended audience (aud), an attacker can generate signed security tokens that make them appear to be a different user. This could allow an attacker to impersonate other users or gain unauthorized access to services that rely on these tokens for identity verification.

Impact#

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Exploit#

History#

1. Version 12026-11-05Record published in the CVE List.
2. Version 22026-11-06Most recent update recorded in the CVE List.