Read the docs
TI-2025-23502 Aliases CVE-2025-32431GHSA-6p68-w45g-48j7

Traefik has a possible vulnerability with the path matchers

Priority MEDIUM 48CWE-22Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
High · High · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00945 61st percentileScored 2026-11-07
Fix Fixed traefik (traefik): 2.11.24, 3.3.6, 3.4.0-rc2github.com/traefik/traefik/v2 (Go): 2.11.23+1 more product

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
traefiktraefikbefore 2.11.24; before 3.3.6; 3.4.0-rc1 to before 3.4.0-rc22.11.24, 3.3.6, 3.4.0-rc2Patch availableCNA
—github.com/traefik/traefik (Go)up to 1.7.34—No fix listedGHSA-6p68-w45g-48j7
—github.com/traefik/traefik/v2 (Go)before 2.11.232.11.23Patch availableGHSA-6p68-w45g-48j7
—github.com/traefik/traefik/v3 (Go)before 3.3.63.3.6Patch availableGHSA-6p68-w45g-48j7
—github.com/traefik/traefik/v3 (Go)3.4.0-rc1 to before 3.4.0-rc23.4.0-rc2Patch availableGHSA-6p68-w45g-48j7
  • traefik Vendortraefik Affected before 2.11.24; before 3.3.6; 3.4.0-rc1 to before 3.4.0-rc2 Fixed in 2.11.24, 3.3.6, 3.4.0-rc2 Patch available CNA
  • github.com/traefik/traefik (Go) Vendor— Affected up to 1.7.34 Fixed in — No fix listed GHSA-6p68-w45g-48j7
  • github.com/traefik/traefik/v2 (Go) Vendor— Affected before 2.11.23 Fixed in 2.11.23 Patch available GHSA-6p68-w45g-48j7
  • github.com/traefik/traefik/v3 (Go) Vendor— Affected before 3.3.6 Fixed in 3.3.6 Patch available GHSA-6p68-w45g-48j7
  • github.com/traefik/traefik/v3 (Go) Vendor— Affected 3.4.0-rc1 to before 3.4.0-rc2 Fixed in 3.4.0-rc2 Patch available GHSA-6p68-w45g-48j7

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:traefik:traefik:*:*:*:*:*:*:*:*before 2.11.24; 3.0.0 to before 3.3.6Vulnerabletraefik
cpe:2.3:a:traefik:traefik:3.4.0:-:*:*:*:*:*:*3.4.0Vulnerabletraefik
cpe:2.3:a:traefik:traefik:3.4.0:rc1:*:*:*:*:*:*3.4.0 rc1Vulnerabletraefik
  • cpe:2.3:a:traefik:traefik:*:*:*:*:*:*:*:* Versions before 2.11.24; 3.0.0 to before 3.3.6 Vulnerable ·traefik
  • cpe:2.3:a:traefik:traefik:3.4.0:-:*:*:*:*:*:* Versions 3.4.0 Vulnerable ·traefik
  • cpe:2.3:a:traefik:traefik:3.4.0:rc1:*:*:*:*:*:* Versions 3.4.0 rc1 Vulnerable ·traefik

Remediation

  • Fix · CNA traefik (traefik) Fixed in 2.11.24, 3.3.6, 3.4.0-rc2
  • Fix · GHSA-6p68-w45g-48j7 github.com/traefik/traefik/v2 (Go) Fixed in 2.11.23 Advisory →
  • Fix · GHSA-6p68-w45g-48j7 github.com/traefik/traefik/v3 (Go) Fixed in 3.3.6 Advisory →
  • Fix · GHSA-6p68-w45g-48j7 github.com/traefik/traefik/v3 (Go) Fixed in 3.4.0-rc2 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-32431
  2. 2026-10-03 Alias added: GHSA-6p68-w45g-48j7

References

Patch 2

Advisory 1

Other 4

  • TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
  • TI-2023-25774 Uncontrolled Resource Consumption in Traefik CVSS 3.1HIGH 7.5
  • TI-2025-40914 Traefik doesn't Prevent Path Normalization Bypass in Router + Middleware Rules CVSS 4.0MEDIUM 6.9
  • TI-2022-07529 Authorization header displayed in the debug logs CVSS 3.1MEDIUM 6.5
  • TI-2024-30459 HTTP client can remove the X-Forwarded headers in Traefik CVSS 3.1CRITICAL 9.8
  • TI-2026-60261 Traefik v3.7.0 Authentication Bypass via from-to-www-redirect CVSS 4.0CRITICAL 9.3
See all 83 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences