CVE-2026-117859
CVE-2026-117859 · Keycloak-services: keycloak-services: par single-use bypass via flow restart
This page contains facts from public vulnerability sources. Check the original advisory before updating.
A flaw was found in the Pushed Authorization Request PAR implementation of the keycloak-services component. The issue occurs when an authentication flow is restarted, which incorrectly clears the internal markers used to track PAR consumption while leaving the request active. This allows an attacker to reuse the same authorization request to obtain multiple access tokens, bypassing security requirements for single-use requests.
CVSS 5.4 · Medium · EPSS 0.2%
- Published
- Updated
Affected products and versions
red hat build of keycloak
No fix published
red hat single sign-on 7
No fix published