CVE-2026-16442 | BDVDB-2026-355364 Detail

Description#

A flaw was found in the SAML broker component of Keycloak, which is used to manage identity federation and user authentication. The issue occurs because the IdP-initiated Single Sign-On endpoint fails to check if a provider is restricted to account linking only. This allows an attacker with control over a linked upstream identity to bypass login restrictions and gain full access to a local user account.

Impact#

Weaknesses#

References#

Exploit#

History#

1. Version 12026-08-05Record published in the CVE List.
2. Version 22026-08-31Most recent update recorded in the CVE List.