{"action":"Upgrade toolchain to 1.21.1 or later.","affected":[{"fixed":"1.21.1","introduced":"1.21.0-0"}],"component":"toolchain","cve_ids":["CVE-2023-39320"],"ecosystem":"Go","epss":0.01757,"exploited":false,"fixed_versions":["1.21.1"],"id":"tcs_01M5KG02GV3A0XKSM4QKQWVA5K","modified_at":"2026-02-04T02:32:48.559967Z","published_at":"2023-09-07T16:11:28Z","references":["https://osv.dev/vulnerability/GO-2023-2042","https://go.dev/issue/62198","https://go.dev/cl/526158","https://groups.google.com/g/golang-dev/c/2C5vbR-UNkI/m/L1hdrPhfBAAJ"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"GO-2023-2042","url":"https://osv.dev/vulnerability/GO-2023-2042"}],"summary":"Arbitrary code execution via go.mod toolchain directive in cmd/go"}