Traefik · Traefik · CVE-2025-32431
**Name of the Vulnerable Software and Affected Versions**
Traefik versions prior to 2.11.24
Traefik versions prior to 3.3.6
Traefik versions prior to 3.4.0-rc2
**Description**
The issue concerns Traefik, an HTTP reverse proxy and load balancer, where a potential vulnerability exists in managing requests using a PathPrefix, Path, or PathRegex matcher. When Traefik is configured to route requests to a backend using a matcher based on the path, if the URL contains a /../ in its path, it is possible to target a backend exposed using another router, bypassing the middlewares chain.
**Recommendations**
For versions prior to 2.11.24, update to version 2.11.24 or later.
For versions prior to 3.3.6, update to version 3.3.6 or later.
For versions prior to 3.4.0-rc2, update to version 3.4.0-rc2 or later.
As a temporary workaround, consider adding a `PathRegexp` rule to the matcher to prevent matching a route with a `/../` in the path.