GHSA-7qf5-7ppr-87v8

Source

https://github.com/advisories/GHSA-7qf5-7ppr-87v8

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/08/GHSA-7qf5-7ppr-87v8/GHSA-7qf5-7ppr-87v8.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-7qf5-7ppr-87v8

Withdrawn

2026-08-06T16:45:13Z

Published

2026-08-01T15:30:27Z

Modified

2026-08-06T17:00:56Z

Severity

7.8 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N/E:X/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 CVSS Calculator

Summary

Duplicate Advisory: Kubernetes Ingress NGINX RewriteTarget Path Traversal Allows Route-Level Authentication Bypass

Details

Duplicate Advisory

This advisory has been withdrawn because it is a duplicate of GHSA-8rxv-jg7p-wvg3. This link is maintained to preserve external references.

Original Description

Traefik versions >= v3.7.0 and <= v3.7.7 contain a path traversal vulnerability in the Kubernetes Ingress NGINX provider's RewriteTarget middleware (generated from the nginx.ingress.kubernetes.io/rewrite-target annotation). When an Ingress path uses a regex that captures attacker-controlled text without requiring a path separator (e.g., path /api(.*) with rewrite target /$1), a crafted request such as /api../admin matches the public router, is rewritten to a dot-segment traversal path (/../admin), and is forwarded without post-replacement normalization validation. A backend that normalizes dot segments resolves the path to a protected endpoint (e.g., /admin) reachable only through a separate router secured with BasicAuth, DigestAuth, or ForwardAuth, resulting in route-level authentication bypass. The issue is fixed in v3.7.8.

Database specific

{
    "cwe_ids": [
        "CWE-22"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-08-06T16:45:13Z",
    "nvd_published_at": "2026-08-01T13:17:00Z",
    "severity": "HIGH"
}

References

Affected packages

Go / github.com/traefik/traefik/v3

Package

Name: github.com/traefik/traefik/v3; View open source insights on deps.dev
Purl: pkg:golang/github.com/traefik/traefik/v3

Affected ranges

Type: SEMVER
Events: Introduced

3.7.0

Last Affected

3.7.7

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/08/GHSA-7qf5-7ppr-87v8/GHSA-7qf5-7ppr-87v8.json"