CVE-2026-54787: sigstore-go fails to check signature timestamps against a signing key's validity period

Overview

Severity

Low (CVSS 3.1)

CVSS Vector

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

Exploit Status

Not Exploited

Patch Tuesday

2026-Jul

Released

2026-08-07

Last Updated

2026-08-23

EPSS Score

0.09% (percentile: 0.5%)

Affected Products (1)

Other

• 21668-17084

Revision History

• 2026-08-07: Information published.
• 2026-08-23: Information published.