{"id":"DEBIAN-CVE-2026-49834","details":"sigstore-go is a Go library for Sigstore signing and verification. Prior to 1.2.0, a verifier configured with WithTransparencyLog(N\u003e1) or WithSignedCertificateTimestamps(N\u003e1) 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.","modified":"2026-08-27T23:06:27.003820329Z","published":"2026-07-17T20:17:21.963Z","upstream":["CVE-2026-49834"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-49834"}],"affected":[{"package":{"name":"sigstore-go","ecosystem":"Debian:13","purl":"pkg:deb/debian/sigstore-go?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.7.1-2","0.7.3-1","0.7.3-2","1.0.0-1","1.1.4-1","1.2.1-1","1.2.2-1","1.3.0-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-49834.json"}},{"package":{"name":"sigstore-go","ecosystem":"Debian:14","purl":"pkg:deb/debian/sigstore-go?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.1-1"}]}],"versions":["0.7.1-2","0.7.3-1","0.7.3-2","1.0.0-1","1.1.4-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-49834.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"}]}