Vulnerability · Published May 30, 2025 · Assigned by GitHub_M
CVE-2025-47952Traefik allows path traversal using url encoding
Low 2.9
In plain English
A low-severity path traversal in traefik from traefik. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 62% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/traefik/traefik | no fix listed | GHSA-vrch-868g-9jx5 |
| Go | github.com/traefik/traefik | no fix listed | GO-2025-3719 |
| Go | github.com/traefik/traefik/v2 | 2.11.25 | GHSA-vrch-868g-9jx5 |
| Go | github.com/traefik/traefik/v2 | 2.11.25 | GO-2025-3719 |
| Go | github.com/traefik/traefik/v3 | 3.4.1 | GHSA-vrch-868g-9jx5 |
| Go | github.com/traefik/traefik/v3 | 3.4.1 | GO-2025-3719 |
Affected products (as reported)
Weakness: CWE-22 · Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
References
- https://github.com/traefik/traefik/security/advisories/GHSA-vrch-868g-9jx5 x_refsource_CONFIRM
- https://github.com/traefik/traefik/commit/08d5dfee0164aa54dd44a467870042e18e8d3f00 x_refsource_MISC
- https://github.com/traefik/traefik/releases/tag/v2.11.25 x_refsource_MISC
- https://github.com/traefik/traefik/releases/tag/v3.4.1 x_refsource_MISC