CVE-2026-117859

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 v3 5.4 MEDIUM

5.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/security/cve/CVE-2026-117859
https://bugzilla.redhat.com/show_bug.cgi?id=2561991

Configurations

No configuration.

History

29 Oct 2026, 07:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-29 07:16

Updated : 2026-10-29 18:17

NVD link : CVE-2026-117859

Mitre link : CVE-2026-117859

CVE.ORG link : CVE-2026-117859

JSON object : View

Products Affected

No product.

CWE

CWE-670

Always-Incorrect Control Flow Implementation

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