Description
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.
Published: 2026-10-22
Score: 7 High
EPSS: n/a
KEV: No
AI Analysis

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Remediation

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Advisories

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History

Thu, 22 Oct 2026 02:00:00 +0000

Type Values Removed Values Added
Description 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.
Title Traefik v3.7.0 before v3.7.14 Client CA Mix-up via auth-tls-secret Name Collision
First Time appeared Traefik
Traefik traefik
Weaknesses CWE-287
CPEs cpe:2.3:a:traefik:traefik:*:*:*:*:*:*:*:*
Vendors & Products Traefik
Traefik traefik
References
Metrics cvssV3_1

{'score': 8.7, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N'}

cvssV4_0

{'score': 7, 'vector': '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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-22T01:43:38.571Z

Reserved: 2026-10-21T21:57:36.197Z

Link: CVE-2026-114638

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-22T02:16:56.653

Modified: 2026-10-22T02:16:56.653

Link: CVE-2026-114638

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-22T08:45:02Z

Weaknesses