CVE-2025-32431
HIGH EPSS 50.9%
Published Apr 21, 20251y ago · Modified Jun 17, 20261w ago
8.8 CVSS 4.0
Published Apr 21, 2025 1y ago
Last Modified Jun 17, 2026 1w ago
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X
Threat Intelligence
EPSS Exploit Probability
50.9% percentile
Exploit & Patch Status
No Known Exploit
Patch Available
Weaknesses 1
CWE-22 Path Traversal Resource Mgmt
Affected Products 4
References 5
- github.com https://github.com/traefik/traefik/pull/11684
- github.com https://github.com/traefik/traefik/releases/tag/v2.11.24
- github.com https://github.com/traefik/traefik/releases/tag/v3.3.6
- github.com https://github.com/traefik/traefik/releases/tag/v3.4.0-rc2
- github.com https://github.com/traefik/traefik/security/advisories/GHSA-6p68-w45g-48j7
Remediation
- github.com https://github.com/traefik/traefik/pull/11684
- github.com https://github.com/traefik/traefik/security/advisories/GHSA-6p68-w45g-48j7