Path Traversal in Traefik
CVE-2025-47952
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.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.009 (59.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 59.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000
Affected products
- Traefik — versions < 3.4.1, < 2.11.25
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/traefik/traefik/security/advisories/GHSA-vrch-868g-9jx5 (Patch, Vendor Advisory)
- github.com/traefik/traefik/commit/08d5dfee0164aa54dd44a467870042e18e8d3f00 (Patch)
- github.com/traefik/traefik/releases/tag/v2.11.25 (Release Notes)
- github.com/traefik/traefik/releases/tag/v3.4.1 (Release Notes)
Frequently asked questions
- What is CVE-2025-47952?
- CVE-2025-47952 is a critical-severity vulnerability in Traefik, classified under Path Traversal. CVSS score: 9.1/10. Published 2025-05-30.
- How severe is CVE-2025-47952?
- Critical severity. CVSS v3 base score is 9.1 out of 10.
- Is CVE-2025-47952 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.