CVEvulnerability

CVE-2026-117859

5.4 MEDIUM Published 2026-10-29 Modified 2026-10-29 Official page ↗
Status
Awaiting Analysis
Published
2026-10-29
Last modified
2026-10-29
Assigner
[email protected]
CVSS 3.1 ([email protected])
5.4 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Weaknesses
CWE-670

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.

Related

Weakness · CWE (1)

  • CWE-670 Always-Incorrect Control Flow Implementation weakness

References