CVE-2026-114638 (GCVE-0-2026-114638)
Vulnerability from cvelistv5 – Published: 2026-10-22 01:43 – Updated: 2026-10-23 15:08
VLAI
EPSS
VEX
Title
Traefik v3.7.0 before v3.7.14 Client CA Mix-up via auth-tls-secret Name Collision
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-23 14:48 UTC
CWE
- CWE-287 - Improper Authentication
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/traefik/traefik/security/advis… | vendor-advisory |
| https://www.vulncheck.com/advisories/traefik-3.7.… | third-party-advisory |
Impacted products
Date Public
2026-10-07 00:00
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