GHSA-7m3p-wc52-rmc6

Source

https://github.com/advisories/GHSA-7m3p-wc52-rmc6

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-7m3p-wc52-rmc6/GHSA-7m3p-wc52-rmc6.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-7m3p-wc52-rmc6

Withdrawn

2026-08-05T21:51:05Z

Published

2026-07-22T12:32:18Z

Modified

2026-08-05T22:01:01Z

Severity

5.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:L/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: Traefik CRD IngressRouteTCP ServersTransport Cross-Provider Namespace Bypass

Details

Duplicate Advisory

This advisory has been withdrawn because it is a duplicate of GHSA-42cj-m3vj-89wv. This link is maintained to preserve external references.

Original Description

Traefik 3.6.0 through 3.6.22 and 3.7.0 through 3.7.6 fail to enforce the crossProviderNamespaces allowlist for IngressRouteTCP service serversTransport references (the allowlist was only enforced for HTTP serversTransport references). A low-privileged Kubernetes user in a namespace not listed in crossProviderNamespaces can set serversTransport: foo@file on an IngressRouteTCP service, causing Traefik to accept the forbidden cross-provider reference and use a file-provider TCPServersTransport — including privileged backend mTLS client certificates, SPIFFE identity, or PROXY-protocol settings. This is fixed in 3.6.23 and 3.7.7.

Database specific

{
    "cwe_ids":  [
        "CWE-863"
    ],
    "github_reviewed":  true,
    "github_reviewed_at":  "2026-08-05T21:51:05Z",
    "nvd_published_at":  "2026-07-22T12:18:20Z",
    "severity":  "MODERATE"
}

References

Affected packages

Go / github.com/traefik/traefik

Package

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

Affected ranges

Type: SEMVER
Events: Introduced

3.6.0

Last Affected

3.6.22

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-7m3p-wc52-rmc6/GHSA-7m3p-wc52-rmc6.json"