{"schema":"threatline.record/2","record":{"id":"CVE-2026-94447","aliases":[],"summary":"Checksum database bypass for golang.org/toolchain in cmd/go","details":"Previously, a user operating inside of a malicious Go project that defines a bogus golang.org/toolchain go.sum entry and operates a malicious GOMODPROXY the user chooses to use can bypass the intended checksum. We now ensure that golang.org/toolchain always goes to the network for the canonical checksum.","categories":["Unclassified"],"product":"cmd/go","vendor":"Go toolchain","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-94447","source_modified_at":"2026-10-15T15:42:37.164Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"cmd/go","vendor":"Go toolchain","versions":[{"version":"0","lessThan":"1.26.9","status":"affected","versionType":"semver"},{"version":"1.27.0-0","lessThan":"1.27.2","status":"affected","versionType":"semver"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-94447","source_modified_at":"2026-10-15T15:42:37.164Z","fetched_at":"2026-10-23T18:48:36.087640Z","package":{"name":"cmd/go","ecosystem":null},"version":"1.26.9","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-94447","source_modified_at":"2026-10-15T15:42:37.164Z","fetched_at":"2026-10-23T18:48:36.087640Z","package":{"name":"cmd/go","ecosystem":null},"version":"1.27.2","basis":"first unaffected version stated in the CVE record"}],"cvss":7.8,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00103,"percentile":0.00919,"score_date":"2026-10-23"},"published_at":"2026-10-08T22:53:57.974Z","modified_at":"2026-10-15T15:42:37.164Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-94447","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-15T15:42:37.164Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-94447","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://go.dev/cl/840785"},{"source":"CVE List","url":"https://go.dev/issue/81834"},{"source":"CVE List","url":"https://groups.google.com/g/golang-announce/c/U2fTuyDJznI"},{"source":"CVE List","url":"https://pkg.go.dev/vuln/GO-2026-6602"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CISA ADP","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"total","assessed_at":"2026-10-15T15:42:26.460826Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-15T15:42:37.164Z","content_hash":"ce4826c70c3dfd68d398494d89da722a5c95a0b171d09453d18098515e9d2d50"}}