CVE-2026-96446 — Keycloak-services: keycloak-services: par single-use bypass via prompt=none silent authentication path
A flaw was found in the Pushed Authorization Request PAR implementation of Keycloak. The issue occurs when the silent authentication path prompt=none is used, which allows the a…
Published: 2026-09-23 · CVSS: 4.2 · CVSS 3.1
A flaw was found in the Pushed Authorization Request PAR implementation of Keycloak. The issue occurs when the silent authentication path prompt=none is used, which allows the authorization process to skip certain steps if a user is already logged in. Due to this bypass, the security rule that ensures a pushed request URI is used only once is not enforced. An attacker could potentially reuse a request URI to obtain multiple authorization codes for a user who is already signed in, violating security standards like FAPI-2.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7