CVE-2026-27138

MediumCVSS 5.9/10Last modified Jun 17, 2026

Description

Certificate verification can panic when a certificate in the chain has an empty DNS name and another certificate in the chain has excluded name constraints. This can crash programs that are either directly verifying X.509 certificate chains, or those that use TLS.

Metrics

CVSS 3.1 5.9/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-295

Affected software

No affected versions have been published.

Timeline

Published: Mar 6, 2026
Last modified: Jun 17, 2026
NVD status: Analyzed

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