HIGH

CVE-2026-114638

CVSS v3

8.7

HIGH

EPSS Score

—

exploit probability

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2026-114638 yet.

Full record on NVD

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.

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
Published: 2026-10-22
Last Modified: 2026-10-22

Frequently asked questions

What is CVE-2026-114638?

Is CVE-2026-114638 actively exploited?

Active exploitation of CVE-2026-114638 has not been confirmed.

What is the CVSS score for CVE-2026-114638?

CVE-2026-114638 has a CVSS v3 base score of 8.7 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N.

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