This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-54787 →

DEBIAN-CVE-2026-54787

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 v...

Original description

The description as published by the source.

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.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:13 sigstore-go

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:14 sigstore-go

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.1-1"}]}]

References

advisory security-tracker.debian.org