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Github Security Blog
Github Security Blog
added 2026/04/14 1:1 a.m.8 views

Sigstore Timestamp Authority has Improper Certificate Validation in verifier

Authorization bypass via certificate bag manipulation in sigstore/timestamp-authority verifier An authorization bypass vulnerability exists in sigstore/timestamp-authority verifier timestamp-authority/v2/pkg/verification: VerifyTimestampResponse function correctly verifies the certificate chain b...

7.5CVSS5.7AI score0.00188EPSS
SaveExploits1References4Affected Software1
OSV
OSV
added 2026/04/14 1:1 a.m.7 views

GHSA-XM5M-WGH2-RRG3 Sigstore Timestamp Authority has Improper Certificate Validation in verifier

Authorization bypass via certificate bag manipulation in sigstore/timestamp-authority verifier An authorization bypass vulnerability exists in sigstore/timestamp-authority verifier timestamp-authority/v2/pkg/verification: VerifyTimestampResponse function correctly verifies the certificate chain b...

5.5CVSS5.7AI score0.00099EPSS
SaveExploits0References4
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