CVE-2026-53583: libgit2: Inverted IP SubjectAltName Comparison in OpenSSL Backend

Overview

Severity

Medium (CVSS 6.5)

CVSS Vector

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

Exploit Status

Not Exploited

Patch Tuesday

2026-Aug

Released

2026-08-22

Last Updated

2026-08-25

EPSS Score

0.24% (percentile: 13.6%)

Affected Products (3)

Other

• 21716-17084
• 19847-17084
• 21500-17084

Revision History

• 2026-08-22: Information published.
• 2026-08-25: Information published.