CVE-2026-114638CWE-287

CVE-2026-114638

High · published October 22, 2026

CVSS v3.1
8.7
EPSS
0%
Percentile
7.8
In the wild
Unconfirmed
What it is

Traefik v3.7.0 before v3.7.14 contains an improper authentication vulnerability in the Kubernetes Ingress NGINX provider that merges client CAs when auth-tls-secret names collide after dot-to-dash normalization. Attackers holding certificates from another host's CA can access a host requiring its own client CA, while that host's legitimate clients are refused.

The record
Technical detail
CVSS v3.1
8.7 · HIGH
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
CVSS v4.0
7.0 · CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N
EPSS
0.00186 · 7.8th percentile
Weakness
CWE-287 · Improper Authentication
Published
2026-10-22T06:16Z
References (2)
https://github.com/traefik/traefik/security/advisories/GHSA-rv2h-qh7j-xrjw · [email protected]https://www.vulncheck.com/advisories/traefik-3.7.0-before-3.7.14-client-ca-mix-up-via-auth-tls-secret-name-collision · [email protected]
EPSS history
Timeline
  • 23 OCT 03:55Z
    EPSS moved — → 0%
    epss
  • 22 OCT 01:43Z
    Traefik v3.7.0 before v3.7.14 Client CA Mix-up via auth-tls-secret Name Collision
    cvelistv5
  • 22 OCT 01:43Z
    Traefik v3.7.0 before v3.7.14 Client CA Mix-up via auth-tls-secret Name Collision
    cvelistv5