{"schema_version":"1.3.1","id":"GO-2026-4868","modified":"2026-04-07T22:53:49Z","published":"2026-04-07T22:53:49Z","aliases":["CVE-2026-27143"],"summary":"Missing bound checks can lead to memory corruption in safe Go in cmd/compile","details":"Arithmetic over induction variables in loops were not correctly checked for underflow or overflow. As a result, the compiler would allow for invalid indexing to occur at runtime, potentially leading to memory corruption.","affected":[{"package":{"name":"toolchain","ecosystem":"Go"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.25.9"},{"introduced":"1.26.0-0"},{"fixed":"1.26.2"}]}],"ecosystem_specific":{"imports":[{"path":"cmd/compile"}]}}],"references":[{"type":"FIX","url":"https://go.dev/cl/763765"},{"type":"REPORT","url":"https://go.dev/issue/78333"},{"type":"WEB","url":"https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU"}],"credits":[{"name":"Jakub Ciolek - https://ciolek.dev/"}],"database_specific":{"url":"https://pkg.go.dev/vuln/GO-2026-4868","review_status":"REVIEWED"}}