CVE-2026-35051CRITICAL 10.0EPSS p16.6%

CVE-2026-35051CVE-2026-35051

Description

Traefik is an HTTP reverse proxy and load balancer. Prior to versions 2.11.43, 3.6.14, and 3.7.0-rc.2, there is an authentication bypass vulnerability in Traefik's ForwardAuth middleware when trustForwardHeader=false is configured and Traefik is deployed behind a trusted upstream proxy. This issue has been patched in versions 2.11.43, 3.6.14, and 3.7.0-rc.2.

Scoring

CVSS 3.110.0 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
EPSS0.26% probability of exploitation · percentile 16.6% · 2026-06-18T12:00:27Z
Published2026-04-30
Last modified2026-05-01

Underlying weaknesses· 1

CWE-345

References

  1. https://github.com/traefik/traefik/releases/tag/v2.11.43
  2. https://github.com/traefik/traefik/releases/tag/v3.6.14
  3. https://github.com/traefik/traefik/releases/tag/v3.7.0-rc.2
  4. https://github.com/traefik/traefik/security/advisories/GHSA-6384-m2mw-rf54

1

TypeTargetConfidenceTier
WeaknessInsufficient Verification of Data Authenticitycwe-3450%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.