HIGH

CVE-2026-114656

CVSS v3

7.5

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-2026-114656 yet.

Full record on NVD

Description

Traefik before 2.11.58 and 3.7.13 contains an authentication bypass vulnerability that allows unauthenticated clients to skip client-certificate checks because negated Host matchers are counted as served domains. Attackers can reach backends protected by RequireAndVerifyClientCert when a router rule with !Host() creates a TLS options conflict that falls back to the default options.

Technical details

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

Frequently asked questions

What is CVE-2026-114656?

Is CVE-2026-114656 actively exploited?

Active exploitation of CVE-2026-114656 has not been confirmed.

What is the CVSS score for CVE-2026-114656?

CVE-2026-114656 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N.

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