CyberRota Analysis
AI-GeneratedThe sigstore-go library prior to version 1.2.1 is vulnerable due to its failure to validate the signing timestamp of bundles against the expiration window of self-managed long-lived signing keys. This oversight could allow an attacker with expired key material to sign and potentially compromise accepted bundles. Organizations using sigstore-go for signing and verification should prioritize upgrading to version 1.2.1 to mitigate this risk.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD 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.