{"action":"Upgrade github.com/sigstore/timestamp-authority/v2 to 2.0.6 or later.","affected":[{"fixed":"2.0.6","introduced":"0"}],"component":"github.com/sigstore/timestamp-authority/v2","cve_ids":["CVE-2026-39984"],"ecosystem":"Go","epss":0.00109,"exploited":false,"fixed_versions":["2.0.6"],"ghsa_id":"GHSA-xm5m-wgh2-rrg3","id":"tcs_01M5KFSDDN863RNAG3H9WP4C86","modified_at":"2026-09-10T03:50:44.895516756Z","published_at":"2026-04-14T01:01:59Z","references":["https://osv.dev/vulnerability/GHSA-xm5m-wgh2-rrg3","https://github.com/sigstore/timestamp-authority/security/advisories/GHSA-xm5m-wgh2-rrg3","https://nvd.nist.gov/vuln/detail/CVE-2026-39984","https://github.com/sigstore/timestamp-authority","https://github.com/sigstore/timestamp-authority/releases/tag/v2.0.6"],"severity":{"label":"medium","score":5.5},"sources":[{"source":"osv","source_id":"GHSA-xm5m-wgh2-rrg3","url":"https://osv.dev/vulnerability/GHSA-xm5m-wgh2-rrg3"}],"summary":"Sigstore Timestamp Authority has Improper Certificate Validation in verifier"}