CVE-2026-54787
LOW3.1CVSS v3
—CVSS v2
0.09%
EPSS (exploit probability)
CWE-324CWE
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 v3 vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N
Affected routers (0)
No routers currently mapped to this CVE in our database.