sigstore timestamp authority vulnerabilities and fixes

Recent CVEs affecting sigstore timestamp authority, with upgrade or downgrade steps. 1 tracked.

Also searched as: sigstoretimestampauthority.

sigstore timestamp authority has 1 tracked vulnerability, 0 critical. A fixed release or vendor patch exists for 1. Most recent: 2026-07-17. Highest priority: CVE-2026-49835 (score 44/100).

• CVE-2026-49835 MEDIUM 5.9 UPGRADE Sigstore Timestamp Authority is a service for issuing RFC 3161 timestamps

FAQ

How do I fix sigstore timestamp authority vulnerabilities?

Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.

Is sigstore timestamp authority being exploited right now?

None of the tracked sigstore timestamp authority CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.

Which sigstore timestamp authority CVE should I patch first?

CVE-2026-49835 currently ranks highest (44/100): Sigstore Timestamp Authority is a service for issuing RFC 3161 timestamps.

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