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Traefik

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high advisory

Vulnerability in Traefik Allows Security Policy Bypass

A vulnerability has been discovered in Traefik versions 3.7.x prior to 3.7.8, enabling an attacker to bypass security policies, potentially leading to unauthorized access or actions.

Traefik vulnerability security-bypass webserver
1i
high advisory

Multiple Security Policy Bypass Vulnerabilities in Traefik Edge Router

Multiple vulnerabilities have been discovered in Traefik, affecting versions 3.6.x prior to 3.6.23, 3.7.x prior to 3.7.7, and versions prior to 2.11.52, which allow an attacker to bypass security policies, potentially leading to unauthorized access or actions.

Traefik < 3.6.23 +2 vulnerability policy-bypass Traefik edge-router
3i
medium advisory

Traefik Security Policy Bypass Vulnerability

A security policy bypass vulnerability exists in Traefik versions prior to v2.11.46, v3.6.x before v3.6.17, and v3.7.x before v3.7.1, allowing attackers to potentially circumvent intended access controls.

Traefik < 2.11.46 +2 security-policy-bypass vulnerability traefik
1r 1t
high advisory

Traefik Data Confidentiality Vulnerability

A vulnerability in Traefik allows an attacker to compromise the confidentiality of data, affecting versions v2.11.x prior to v2.11.44, v3.6.x prior to v3.6.15, and v3.7.0-rc.x prior to v3.7.0-rc.3.

Traefik vulnerability data-disclosure
2r 1t
high advisory

Traefik gRPC Deny Rule Bypass Vulnerability (CVE-2026-33186)

A remote, unauthenticated attacker can bypass Traefik deny rules by sending malformed gRPC requests with a missing leading slash in the `:path` pseudo-header, exploiting a vulnerability in the gRPC-Go dependency, leading to unauthorized access if a fallback "allow" rule is configured.

traefik grpc authorization-bypass cve-2026-33186
2r 1t
high advisory

Traefik ForwardAuth Authentication Bypass via X-Forwarded-Prefix Spoofing

A high-severity authentication bypass vulnerability exists in Traefik's `ForwardAuth` middleware when `trustForwardHeader=false` is configured and Traefik is deployed behind a trusted upstream proxy; Traefik fails to sanitize the `X-Forwarded-Prefix` header, allowing attackers to spoof a trusted prefix value and gain unauthorized access to protected backend routes.

Traefik authentication-bypass webserver
2r 1t