{"id":"CVE-2026-18022","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-18022","generatedAt":"2026-10-28T02:20:13.775Z","title":"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.","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.","published":"2026-07-29T20:17:03.000Z","lastModified":"2026-08-20T13:15:03.000Z","status":"Analyzed","sourceIdentifier":"f86ef6dc-4d3a-42ad-8f28-e6d5547a5007","cvss":{"version":"3.1","score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-190","CWE-787"],"affected":["pgvector project/pgvector"],"epss":{"score":0.00601,"percentile":0.48456,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.60%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://github.com/pgvector/pgvector/commit/636a92a3395d2e036ffd40d07aeb400a708ae104","tags":["Patch"],"source":"f86ef6dc-4d3a-42ad-8f28-e6d5547a5007"},{"url":"https://github.com/pgvector/pgvector/issues/1006","tags":["Issue Tracking","Vendor Advisory"],"source":"f86ef6dc-4d3a-42ad-8f28-e6d5547a5007"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-18022","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}