{"action":"Upgrade toolchain to 1.25.9 or later.","affected":[{"fixed":"1.25.9","introduced":"0"},{"fixed":"1.26.2","introduced":"1.26.0-0"}],"component":"toolchain","cve_ids":["CVE-2026-27143"],"ecosystem":"Go","epss":0.00545,"exploited":false,"fixed_versions":["1.25.9","1.26.2"],"id":"tcs_01M5KGGME1QKT0J1XXAXYC9JJR","modified_at":"2026-07-30T10:59:53.459574989Z","published_at":"2026-04-07T22:53:49Z","references":["https://osv.dev/vulnerability/GO-2026-4868","https://go.dev/cl/763765","https://go.dev/issue/78333","https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU"],"severity":{"label":"critical","score":9.8},"sources":[{"source":"osv","source_id":"GO-2026-4868","url":"https://osv.dev/vulnerability/GO-2026-4868"},{"source":"nvd","source_id":"CVE-2026-27143","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-27143"}],"summary":"Missing bound checks can lead to memory corruption in safe Go in cmd/compile"}