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.
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History
Fri, 17 Jul 2026 20:30:00 +0000
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ssvc
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Fri, 17 Jul 2026 19:30:00 +0000
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| Description | 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. | |
| Title | sigstore-go: Multi-log threshold bypass via single compromised log | |
| Weaknesses | CWE-347 | |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-07-17T19:42:17.005Z
Reserved: 2026-06-01T18:50:36.056Z
Link: CVE-2026-49834
Updated: 2026-07-17T19:42:12.585Z
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OpenCVE Enrichment
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