Traefik is an HTTP reverse proxy and load balancer. Prior to v2.11.51, v3.6.22, and v3.7.6, Traefik's ForwardAuth middleware, even when configured with trustForwardHeader: false, derives the X-Forwarded-Port header sent to the authentication service from the original incoming request instead of the sanitized forwarded request. As a result, an unauthenticated remote attacker can inject an X-Forwarded-Proto: https header over a plain HTTP connection and cause Traefik to forward X-Forwarded-Port: 443 to the authentication service, bypassing port-based authorization checks. This issue is fixed in versions v2.11.51, v3.6.22, and v3.7.6.
References
| Link | Resource |
|---|---|
| https://github.com/traefik/traefik/commit/7ae92d8c2c10ac04ef5a03df0ed5019ce0f44b2d | Patch |
| https://github.com/traefik/traefik/pull/13344 | Issue Tracking |
| https://github.com/traefik/traefik/security/advisories/GHSA-3q9r-p662-5j8m | Patch Vendor Advisory |
Configurations
Configuration 1 (hide)
|
History
08 Jul 2026, 03:01
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:a:traefik:traefik:*:*:*:*:*:*:*:* | |
| First Time |
Traefik
Traefik traefik |
|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.8 |
| References | () https://github.com/traefik/traefik/commit/7ae92d8c2c10ac04ef5a03df0ed5019ce0f44b2d - Patch | |
| References | () https://github.com/traefik/traefik/pull/13344 - Issue Tracking | |
| References | () https://github.com/traefik/traefik/security/advisories/GHSA-3q9r-p662-5j8m - Patch, Vendor Advisory |
06 Jul 2026, 21:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-07-06 21:16
Updated : 2026-07-08 03:01
NVD link : CVE-2026-54764
Mitre link : CVE-2026-54764
CVE.ORG link : CVE-2026-54764
JSON object : View
Products Affected
traefik
- traefik
CWE
CWE-345
Insufficient Verification of Data Authenticity