{"id":"CVE-2026-18022","state":"PUBLISHED","title":"pgvector buffer overflow via integer wraparound in IVFFlat index build on 32-bit systems","description":"Integer wraparound in IVFFlat index build in pgvector before 0.8.6 allows a database user to write data out-of-bounds, which could lead to arbitrary code execution. Only 32-bit systems are affected.","publishedAt":"2026-07-29T18:55:54.658Z","updatedAt":"2026-10-07T02:15:29.825Z","severity":{"score":8.8,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","source":"PostgreSQL"},"assigner":"PostgreSQL","products":["n/a pgvector"],"affected":[{"vendor":"n/a","product":"pgvector","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"0.8.6","versionType":"semver"}]}],"references":["https://github.com/pgvector/pgvector/issues/1006","https://github.com/pgvector/pgvector/commit/636a92a3395d2e036ffd40d07aeb400a708ae104"],"weaknesses":["CWE-190","CWE-787"],"ingestedAt":"2026-10-29T20:11:10.572Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/18xxx/CVE-2026-18022.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-18022","state":"PUBLISHED","datePublished":"2026-07-29T18:55:54.658Z","dateUpdated":"2026-10-07T02:15:29.825Z","assignerShortName":"PostgreSQL","assignerOrgId":"f86ef6dc-4d3a-42ad-8f28-e6d5547a5007","dateReserved":"2026-07-28T00:20:11.430Z"},"containers":{"cna":{"title":"pgvector buffer overflow via integer wraparound in IVFFlat index build on 32-bit systems","descriptions":[{"lang":"en","value":"Integer wraparound in IVFFlat index build in pgvector before 0.8.6 allows a database user to write data out-of-bounds, which could lead to arbitrary code execution. Only 32-bit systems are affected."}],"affected":[{"vendor":"n/a","product":"pgvector","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"0.8.6","versionType":"semver"}]}],"references":[{"url":"https://github.com/pgvector/pgvector/issues/1006"},{"url":"https://github.com/pgvector/pgvector/commit/636a92a3395d2e036ffd40d07aeb400a708ae104"}],"metrics":[{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":8.8,"baseSeverity":"HIGH"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-190","lang":"en","type":"CWE","description":"Integer Overflow or Wraparound"}]},{"descriptions":[{"cweId":"CWE-787","lang":"en","type":"CWE","description":"Out-of-bounds Write"}]}],"providerMetadata":{"shortName":"PostgreSQL","orgId":"f86ef6dc-4d3a-42ad-8f28-e6d5547a5007","dateUpdated":"2026-10-07T02:15:29.825Z"},"configurations":[{"lang":"en","value":"attacker has permission to create an IVFFlat index on a 32-bit system"}],"credits":[{"lang":"en","value":"Thanks to 0xJi3F for reporting this, as well as Thai Son Dinh from VinSOC Labs."}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-30T00:00:00+00:00","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3","id":"CVE-2026-18022"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-31T03:56:13.731Z"}}]}}}