{"id":"CVE-2026-27143","state":"PUBLISHED","title":"Missing bound checks can lead to memory corruption in safe Go in cmd/compile","description":"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.","publishedAt":"2026-04-08T01:06:57.168Z","updatedAt":"2026-04-13T18:20:17.933Z","severity":{"score":9.8,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","source":"CISA-ADP"},"assigner":"Go","products":["Go toolchain cmd/compile"],"affected":[{"vendor":"Go toolchain","product":"cmd/compile","packageName":"cmd/compile","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"1.25.9","versionType":"semver"},{"version":"1.26.0-0","status":"affected","lessThan":"1.26.2","versionType":"semver"}],"collectionURL":"https://pkg.go.dev"}],"references":["https://go.dev/cl/763765","https://go.dev/issue/78333","https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU","https://pkg.go.dev/vuln/GO-2026-4868"],"weaknesses":[],"ingestedAt":"2026-10-29T20:11:31.369Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/27xxx/CVE-2026-27143.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-27143","state":"PUBLISHED","datePublished":"2026-04-08T01:06:57.168Z","dateUpdated":"2026-04-13T18:20:17.933Z","assignerShortName":"Go","assignerOrgId":"1bb62c36-49e3-4200-9d77-64a1400537cc","dateReserved":"2026-02-17T19:57:28.435Z"},"containers":{"cna":{"title":"Missing bound checks can lead to memory corruption in safe Go in cmd/compile","descriptions":[{"lang":"en","value":"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":[{"vendor":"Go toolchain","product":"cmd/compile","packageName":"cmd/compile","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"1.25.9","versionType":"semver"},{"version":"1.26.0-0","status":"affected","lessThan":"1.26.2","versionType":"semver"}],"collectionURL":"https://pkg.go.dev"}],"references":[{"url":"https://go.dev/cl/763765"},{"url":"https://go.dev/issue/78333"},{"url":"https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU"},{"url":"https://pkg.go.dev/vuln/GO-2026-4868"}],"problemTypes":[{"descriptions":[{"lang":"en","description":"CWE-190: Integer Overflow or Wraparound"}]}],"providerMetadata":{"shortName":"Go","orgId":"1bb62c36-49e3-4200-9d77-64a1400537cc","dateUpdated":"2026-04-08T01:06:57.168Z"},"credits":[{"lang":"en","value":"Jakub Ciolek - https://ciolek.dev/"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":9.8,"attackVector":"NETWORK","baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","integrityImpact":"HIGH","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"NONE","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-04-13T17:50:24.131708Z","id":"CVE-2026-27143","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-04-13T18:20:17.933Z"}}]}}}