PT-2026-57022 · Unknown · Sigstore-Go
CVE-2026-49834
·
Published
2026-07-09
·
Updated
2026-07-30
CVSS v3.1
7.5
High
| Vector | AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
Name of the Vulnerable Software and Affected Versions
sigstore-go versions prior to 1.2.0
Description
A flaw exists in the verification process when configured with
WithTransparencyLog(N>1) or WithSignedCertificateTimestamps(N>1). The system counts verified witnesses per entry or per validation path instead of per log authority. This allows a single compromised transparency log or Certificate Transparency (CT) log to forge multiple entries or verify multiple times, satisfying multi-log threshold requirements and bypassing the intended multi-log security policy.Recommendations
Update to version 1.2.0.
Exploit
Fix
Improper Verification of Cryptographic Signature
Insufficient Verification of Data Authenticity
Found an issue in the description? Have something to add? Feel free to write us 👾
Related Identifiers
Affected Products
Sigstore-Go