CVE-2025-32431

Description

Traefik (pronounced traffic) is an HTTP reverse proxy and load balancer. In versions prior to 2.11.24, 3.3.6, and 3.4.0-rc2. 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 /../ 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 2.11.24, 3.3.6, and 3.4.0-rc2. A workaround involves adding a `PathRegexp` rule to the matcher to prevent matching a route with a `/../` in the path.

Reserved 2025-04-08 | Published 2025-04-21 | Updated 2025-04-21 | Assigner GitHub_M

Problem types

CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Product status

< 2.11.24
affected

< 3.3.6
affected

>= 3.4.0-rc1, < 3.4.0-rc2
affected

References

github.com/...raefik/security/advisories/GHSA-6p68-w45g-48j7

github.com/traefik/traefik/pull/11684

github.com/traefik/traefik/releases/tag/v2.11.24

github.com/traefik/traefik/releases/tag/v3.3.6

github.com/traefik/traefik/releases/tag/v3.4.0-rc2

cve.org (CVE-2025-32431)

nvd.nist.gov (CVE-2025-32431)

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