Connect your agent
AdvisoriesCriticalCheck your lockfilePluginHow it worksPricing Connect your agent

Advisory record · GHSA-4mr2-fg2p-w63c

Traefik Kubernetes Ingress NGINX provider fails open when auth-secret resolution fails

CVSS 5.9 MediumEPSS 0.0043 · 37th percentile

Published by the GitHub Advisory Database at 19 Jun 2026, 21:15 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
github.com/traefik/traefik/v3Go>=3.7.0-ea.1, <3.7.53.7.5
Identifiers
GHSA-4mr2-fg2p-w63c · CVE-2026-54762 · GO-2026-5128
Weakness (CWE)
CWE-636 · CWE-693
Tags
Published
19 Jun 2026
Updated
10 Sept 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Traefik's Kubernetes Ingress NGINX provider, in affected versions from 3.7.0-ea.1 before 3.7.5, fails open when an Ingress enables BasicAuth or DigestAuth but its auth Secret cannot be resolved or parsed. In that case Traefik logs the error, omits the authentication middleware, and still routes traffic to the backend, so an attacker with network access to the route can reach the backend without authentication. Upgrade the github.com/traefik/traefik/v3 module to version 3.7.5 or later.

Written 1 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
5.9 Medium 4.0 CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0043, the 37th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:14 UTC First seen by agentprime
  2. 31 Oct 2026, 14:14 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.