{"id":"CVE-2026-18022","revision":"b8758cf24180477c807e50e00e168d24","records":[{"revision":"b8758cf24180477c807e50e00e168d24","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-18022","aliases":[],"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.","state":0,"publishedAt":"2026-07-29T18:55:54.658+00:00","modifiedAt":"2026-10-07T02:15:29.825+00:00","affected":[{"ecosystem":"Vendor product","name":"pgvector","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"defaultStatus\": \"unaffected\",\n                    \"product\": \"pgvector\",\n                    \"vendor\": \"n/a\",\n                    \"versions\": [\n                        {\n                            \"lessThan\": \"0.8.6\",\n                            \"status\": \"affected\",\n                            \"version\": \"0\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":8.8,"severity":"HIGH"}],"references":["https://github.com/pgvector/pgvector/issues/1006","https://github.com/pgvector/pgvector/commit/636a92a3395d2e036ffd40d07aeb400a708ae104"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-18022","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-18022","identifiers":["CVE-2026-18022"]},"retained":false,"historicalAffected":[]}],"coverage":[]}