{"action":"Upgrade github.com/sigstore/sigstore-go to 1.2.1 or later.","affected":[{"fixed":"1.2.1","introduced":"0"}],"component":"github.com/sigstore/sigstore-go","cve_ids":["CVE-2026-54787"],"ecosystem":"Go","epss":0.00134,"exploited":false,"fixed_versions":["1.2.1"],"ghsa_id":"GHSA-wqqc-jjcq-vfxm","id":"tcs_01M5KGS7T8F5AHPB45XDYK4XB3","modified_at":"2026-08-18T15:00:17.558794471Z","published_at":"2026-08-18T14:32:29Z","references":["https://osv.dev/vulnerability/GO-2026-6162","https://github.com/sigstore/sigstore-go/security/advisories/GHSA-wqqc-jjcq-vfxm","https://github.com/sigstore/sigstore-go/commit/4594ab4c779d08be1f4419803a8249188f35ed5f","https://github.com/sigstore/sigstore-go/pull/642","https://github.com/sigstore/sigstore-go/releases/tag/v1.2.1"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"GO-2026-6162","url":"https://osv.dev/vulnerability/GO-2026-6162"}],"summary":"sigstore-go fails to check signature timestamps against a signing key's validity period in github.com/sigstore/sigstore-go"}