CVE-2026-85596

Katalog CVE

CVSS 9.8 · Critical EPSS 0,43%

Kerentanan Improper Authentication pada traefik. Skor CVSS 3.1 9.8 (Critical) menurut NVD.

Deskripsi (NVD)

Traefik versions >= v3.7.0 and <= v3.7.10 contain an authentication bypass in the Kubernetes Ingress NGINX provider. The TLS option generated for an Ingress carrying the nginx.ingress.kubernetes.io/auth-tls-secret annotation was named after the Ingress namespace and name. As a result, two Ingress objects sharing the same host, the same client CA secret, and the same client-authentication mode produced two distinct TLS option names for that host. Traefik treats this as a TLS options conflict and falls back to the entry point's default TLS configuration, which does not request a client certificate, so a route configured with nginx.ingress.kubernetes.io/auth-tls-verify-client: "on" becomes reachable without a client certificate. Only the v3.7 line is affected; the issue is fixed in v3.7.11.

Rincian

Terbit di NVD

4 September 2026

Terakhir diubah

8 Oktober 2026

Status NVD

Analyzed

CVSS 3.1

9.8 (Critical), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-287: Improper Authentication

EPSS (30 hari)

0,43% peluang dieksploitasi; lebih tinggi dari 36,0% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/traefik/traefik/security/advisories/GHSA-j994-9gqj-9hwq exploit · mitigasi · patch · advisory vendor
• https://www.vulncheck.com/advisories/traefik-3.7-authentication-bypass-via-tls-option-conflict advisory pihak ketiga