CVE-2026-48791Low· 2.0▾ Sunlitsigstore-java is a sigstore java client for interacting with sigstore infrastructure. Version 2.0.0 erroneously removed verification of the integrated (Rekor entry) time) against the Fulcio certificate. Version 2.1.0 re-added this verifi…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 11 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Aug 13.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.06%
Last analysed / modified upstream
0.06% → 0.08%
sigstore-java is a sigstore java client for interacting with sigstore infrastructure. Version 2.0.0 erroneously removed verification of the integrated (Rekor entry) time) against the Fulcio certificate. Version 2.1.0 re-added this verification with enhancements that adhere to the Sigstore verification spec. The old sigstore-conformance test for this check was built incorrectly. This vulnerability impacts only users verifying bundles with dev.sigstore:sigstore-java:2.0.0. Older versions are not affected; it is fixed in dev.sigstore:sigstore-java:2.1.0 A malicious actor may exploit this if they were able to access a users system and exfiltrate the temporary private key used during signing and then reuse an old fulcio certificate later without requiring direct access to the user's credentials. Users may protect themselves by re-verifying their artifacts using the newest sigstore-java or another current sigstore client. Transparency logs may also be audited for unauthorized signatures for a suspected reused identity.
Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Affected packages:
dev.sigstore:sigstore-java = 2.0.0Patched in:
dev.sigstore:sigstore-java 2.1.0Connected by shared product, vendor, weakness, or advisory.
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