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CVE-2026-114638 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:8.7 HIGHVector:CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/traefik/traefik/security/advisories/GHSA-rv2h-qh7j-xrjw	[email protected]	Vendor Advisory
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]	Third Party Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-287	Improper Authentication	[email protected]

Affected Products

Product	Versions
traefik traefik	>= 3.7.0, < 3.7.14
CPE cpe:2.3:a:traefik:traefik:::::::: Remediation No remediation found in references.

Change History

3 change records found show changes

Date	Action	Recorded By
Oct 27, 2026	Initial Analysis	[email protected]
Oct 23, 2026	CVE Modified	CISA-ADP
Oct 22, 2026	New CVE Received	[email protected]