All vulnerabilities

Servers and applications

CVE-2026-114640

Traefik from v3.7.0 before v3.7.14 contains an authentication bypass vulnerability in its Kubernetes Ingress-NGINX provider that forwards client-supplied Ssl-Client-* headers on the plaintext HTTP router. When ssl-redirect is disabled alongside auth-tls-pass-certificate-to-upstream, unauthenticated attackers can send Ssl-Client-Verify: SUCCESS with a chosen certificate subject and issuer to…

Severity
High 7.0
Published
22 Oct 2026
Last changed
28 Oct 2026
Added to UpHeron
1 Nov 2026
Fixed in
3.7.14
Sources
NVD

Affected software

SoftwareAffected versions
TraefikServers and applications · cpe:a:traefik:traefik
  • From 3.7.0 before 3.7.14

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2026-114640
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2026-114640