{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-18022","assignerOrgId":"f86ef6dc-4d3a-42ad-8f28-e6d5547a5007","state":"PUBLISHED","assignerShortName":"PostgreSQL","dateReserved":"2026-07-28T00:20:11.430Z","datePublished":"2026-07-29T18:55:54.658Z","dateUpdated":"2026-07-31T03:56:13.731Z"},"containers":{"cna":{"providerMetadata":{"orgId":"f86ef6dc-4d3a-42ad-8f28-e6d5547a5007","shortName":"PostgreSQL","dateUpdated":"2026-07-29T18:55:54.658Z"},"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":[{"defaultStatus":"unaffected","product":"pgvector","vendor":"n/a","versions":[{"lessThan":"0.8.6","status":"affected","version":"0","versionType":"semver"}]}],"problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-190","type":"CWE","description":"Integer Overflow or Wraparound"}]},{"descriptions":[{"lang":"en","cweId":"CWE-787","type":"CWE","description":"Out-of-bounds Write"}]}],"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"}}],"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."}]},"adp":[{"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"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-07-31T03:56:13.731Z"}}]}}