CVE-2025-47952 Information

Description

Traefik (pronounced traffic) is an HTTP reverse proxy and load balancer. Prior to versions 2.11.25 and 3.4.1 there is a potential vulnerability in Traefik managing the requests using a PathPrefix Path or PathRegex matcher. When Traefik is configured to route the requests to a backend using a matcher based on the path if the URL contains a URL encoded string in its path it’s possible to target a backend exposed using another router by-passing the middlewares chain. This issue has been patched in versions 2.11.25 and 3.4.1.

Reference

https://github.com/traefik/traefik/commit/08d5dfee0164aa54dd44a467870042e18e8d3f00 https://github.com/traefik/traefik/releases/tag/v2.11.25 https://github.com/traefik/traefik/releases/tag/v3.4.1 https://github.com/traefik/traefik/security/advisories/GHSA-vrch-868g-9jx5