{"action":"Upgrade github.com/sigstore/timestamp-authority/v2 to 2.0.3 or later.","affected":[{"fixed":"2.0.3","introduced":"0"}],"component":"github.com/sigstore/timestamp-authority/v2","cve_ids":["CVE-2025-66564"],"ecosystem":"Go","epss":0.00443,"exploited":false,"fixed_versions":["2.0.3"],"ghsa_id":"GHSA-4qg8-fj49-pxjh","id":"tcs_01M5KGC6PTPN7RJA3D4DF05W96","modified_at":"2026-02-04T03:13:38.955698Z","published_at":"2025-12-08T21:31:36Z","references":["https://osv.dev/vulnerability/GO-2025-4192","https://github.com/sigstore/timestamp-authority/security/advisories/GHSA-4qg8-fj49-pxjh","https://nvd.nist.gov/vuln/detail/CVE-2025-66564","https://github.com/sigstore/timestamp-authority/commit/0cae34e197d685a14904e0bad135b89d13b69421"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"GO-2025-4192#Go/github.com/sigstore/timestamp-authority/v2","url":"https://osv.dev/vulnerability/GO-2025-4192"}],"summary":"Sigstore Timestamp Authority allocates excessive memory during request parsing in github.com/sigstore/timestamp-authority"}