PT-2026-36177

CVE-2026-35051

Published

2026-04-22

Updated

2026-09-18

Description by

CVSS 3.1

Critical

MetricsAV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

Name of the Vulnerable Software and Affected Versions Traefik versions prior to 2.11.43 Traefik versions prior to 3.6.14 Traefik versions prior to 3.7.0-rc.2

Description An authentication bypass exists in the ForwardAuth middleware of Traefik, an HTTP reverse proxy and load balancer. This occurs when trustForwardHeader is set to false and the software is deployed behind a trusted upstream proxy.

Recommendations Update to version 2.11.43. Update to version 3.6.14. Update to version 3.7.0-rc.2.

Exploitability

Exploit

Fix

Impacts

Researchers

Vendors

Affected products

Weakness enumeration

CWE-501: Trust Boundary Violation

CWE-345: Insufficient Verification of Data Authenticity

Related identifiers