Description
sigstore-go is a Go library for Sigstore signing and verification. Prior to 1.2.1, sigstore-go does not check a bundle signing timestamp against the validity window of an ExpiringKey wrapping a self-managed long-lived signing key without a certificate, which can allow an attacker holding expired key material to sign accepted bundles. This issue is fixed in version 1.2.1.
CVSS 3.1EPSS 0.09%Risk 0.31
View source- Published
- 2026-07-31 23:17:25
- Affected versions
- <1.2.1
- Type
- Library
- Last modified
- 2026-08-01 00:17:17
- Vector
- CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N