{"id":"GO-2026-4867","aliases":["BIT-golang-2026-27144","CVE-2026-27144"],"title":"Miscompilation allows memory corruption via CONVNOP-wrapped array copy in cmd/compile","titleSource":"OSV","descriptionSource":"OSV","description":"The compiler is meant to unwrap pointers which are the operands of a memory move; a no-op interface conversion prevented the compiler from making the correct determination about non-overlapping moves, potentially leading to memory corruption at runtime.","severity":"unknown","score":null,"published":"2026-04-07T22:53:49.000Z","modified":"2026-11-14T13:12:14.322Z","withdrawn":false,"knownExploited":false,"affected":[{"ecosystem":"Go","name":"toolchain","sources":[{"name":"OSV · GO-2026-4867","url":"https://osv.dev/vulnerability/GO-2026-4867"}],"ranges":[{"events":[{"introduced":"0"},{"fixed":"1.25.9"},{"introduced":"1.26.0-0"},{"fixed":"1.26.2"}],"type":"SEMVER"}],"versions":[],"fixed":["1.25.9","1.26.2"]}],"sourceAffected":[],"references":["https://go.dev/cl/763764","https://go.dev/issue/78371","https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU"],"sources":[{"name":"OSV","id":"GO-2026-4867","modified":"2026-11-14T13:12:14.322399265Z","url":"https://osv.dev/vulnerability/GO-2026-4867"}],"assessments":[],"products":[],"remediation":[],"observedAt":"2026-11-14T15:05:12.738Z","kev":{"status":"not-listed","checkedAt":"2026-11-15T02:10:31.937Z"},"coverage":[{"source":"NVD","status":"refresh-failed","attemptedAt":"2026-11-14T00:50:57.910Z"},{"source":"GHSA","status":"available","checkedAt":"2026-11-14T00:40:33.480Z","attemptedAt":"2026-11-14T00:40:33.480Z"},{"source":"EUVD","status":"available","checkedAt":"2026-11-14T00:40:34.178Z","attemptedAt":"2026-11-14T00:40:34.178Z"},{"source":"EPSS","status":"available","checkedAt":"2026-11-14T00:40:32.396Z","attemptedAt":"2026-11-14T00:40:32.396Z"}],"evidence":[{"source":"FIRST EPSS","id":"CVE-2026-27144","url":"https://www.first.org/epss/","probability":0.00266,"percentile":0.18675,"date":"2026-11-13","checkedAt":"2026-11-14T00:40:32.396Z"},{"source":"GitHub Advisory Database","id":"GHSA-cqrx-3m42-5p5w","url":"https://github.com/advisories/GHSA-cqrx-3m42-5p5w","modified":"2026-04-16T21:32:15Z","score":7.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","checkedAt":"2026-11-14T00:40:33.480Z"},{"source":"ENISA EUVD","id":"EUVD-2026-20006","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-20006","modified":"Apr 13, 2026, 6:20:28 PM","score":7.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","checkedAt":"2026-11-14T00:40:34.178Z"}],"aiSummary":null}