CVE-2026-117859
MEDIUM
NVD
CVSS Score
5.4
Severity
MEDIUM
Published
Oct 29, 2026
Vendor
unknown
Description
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.