CVE-2026-27145: Inefficient candidate hostname parsing in crypto/x509

Overview

Severity

Medium (CVSS 6.5)

CVSS Vector

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

Exploit Status

Not Exploited

Patch Tuesday

2026-Jun

Released

2026-06-06

Last Updated

2026-09-03

EPSS Score

0.59% (percentile: 46.0%)

Detection & Weaponization (1 sources)

Maturity: Exploit

• GitHub PoC: 1 repositories

Affected Products (4)

Other

• 21411-17084
• 21423-17084
• 21483-17084
• 21489-17084

Revision History

• 2026-06-06: Information published.
• 2026-06-07: Information published.
• 2026-06-07: Information published.
• 2026-06-09: Information published.
• 2026-06-28: Information published.
• 2026-09-03: Information published.