{"action":"Upgrade github.com/sigstore/cosign/v3 to 3.0.6 or later.","affected":[{"fixed":"3.0.6","introduced":"3.0.0"}],"component":"github.com/sigstore/cosign/v3","cve_ids":["CVE-2026-39395"],"ecosystem":"Go","epss":0.00241,"exploited":false,"fixed_versions":["3.0.6"],"ghsa_id":"GHSA-w6c6-c85g-mmv6","id":"tcs_01M5KGP7657FACF4K3K611Y1SG","modified_at":"2026-06-27T02:14:27.010522086Z","published_at":"2026-06-25T22:34:38Z","references":["https://osv.dev/vulnerability/GO-2026-5694","https://github.com/sigstore/cosign/security/advisories/GHSA-w6c6-c85g-mmv6","https://nvd.nist.gov/vuln/detail/CVE-2026-39395"],"severity":{"label":"medium","score":5.3},"sources":[{"source":"osv","source_id":"GO-2026-5694#Go/github.com/sigstore/cosign/v3","url":"https://osv.dev/vulnerability/GO-2026-5694"},{"source":"nvd","source_id":"CVE-2026-39395","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-39395"}],"summary":"Cosign's verify-blob-attestation reports false positive when payload parsing fails in github.com/sigstore/cosign"}