5.9Mittel
CVE-2026-49834sigstore-go: Multi-log threshold bypass via single compromised log
Beschreibung
sigstore-go is a Go library for Sigstore signing and verification. Prior to 1.2.0, a verifier configured with WithTransparencyLog(N>1) or WithSignedCertificateTimestamps(N>1) counts verified witnesses per entry or per validation path rather than per log authority, allowing a single compromised transparency log or CT log to satisfy multi-log threshold requirements and defeat the multi-log policy. This issue is fixed in version 1.2.0.
Schwachstellentyp (CWE):
CWE-347
Daten: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Wiedergegeben wie in der Quelle, auf Englisch.
Betroffene Produkte und Versionen
| Hersteller | Produkt | Versionen | |
|---|---|---|---|
| sigstore | sigstore-go | < 1.2.0 |
Referenzen und Patches
- https://github.com/sigstore/sigstore-go/security/advisories/GHSA-9vcr-p3rj-q5q6 Vendor Advisory
- https://github.com/sigstore/sigstore-go/pull/633 Issue TrackingPatch
- https://github.com/sigstore/sigstore-go/commit/dbb07e62623edd5b175fb9dd5a41dcb85a159207 Patch
- https://github.com/sigstore/sigstore-go/releases/tag/v1.2.0 ProductRelease Notes
CPE-Treffer (NVD) (1)
cpe:2.3:a:sigstore:sigstore-go:*:*:*:*:*:*:*:*< 1.2.0