Go/github.com/sigstore/cosign CVE-2026-39395: medium 4.3, EPSS 0.29%
Cosign's verify-blob-attestation reports false positive when payload parsing fails
Action: Upgrade github.com/sigstore/cosign to 2.6.3 or later.
go get github.com/sigstore/cosign@v3.0.6go get github.com/sigstore/cosign@v2.6.3Affected
| introduced | fixed | last affected |
|---|---|---|
| 3.0.0 | 3.0.6 | - |
| 0 | 2.6.3 | - |
Fixed versions
| 3.0.6 | 2.6.3 |
Sources
- osv: GHSA-w6c6-c85g-mmv6
- https://github.com/sigstore/cosign/security/advisories/GHSA-w6c6-c85g-mmv6
- https://nvd.nist.gov/vuln/detail/CVE-2026-39395
- https://github.com/sigstore/cosign
CVE-2026-39395 · published · modified · JSON