{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-3172", "assignerOrgId": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007", "state": "PUBLISHED", "assignerShortName": "PostgreSQL", "dateReserved": "2026-02-24T22:42:24.733Z", "datePublished": "2026-02-25T20:59:10.051Z", "dateUpdated": "2026-02-25T20:59:10.051Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007", "shortName": "PostgreSQL", "dateUpdated": "2026-02-25T20:59:10.051Z"}, "title": "pgvector buffer overflow in parallel HNSW index build", "descriptions": [{"lang": "en", "value": "Buffer overflow in parallel HNSW index build in pgvector 0.6.0 through 0.8.1 allows a database user to leak sensitive data from other relations or crash the database server."}], "affected": [{"defaultStatus": "unaffected", "product": "pgvector", "vendor": "n/a", "versions": [{"lessThan": "0.8.2", "status": "affected", "version": "0.8.0", "versionType": "semver"}, {"status": "affected", "version": "0.7.0", "versionType": "semver"}, {"status": "affected", "version": "0.6.0", "versionType": "semver"}]}], "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-191", "type": "CWE", "description": "Integer Underflow or Wraparound"}]}, {"descriptions": [{"lang": "en", "cweId": "CWE-787", "type": "CWE", "description": "Out-of-bounds Write"}]}], "references": [{"url": "https://github.com/pgvector/pgvector/issues/959"}], "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:N/A:H", "baseScore": 8.1, "baseSeverity": "HIGH"}}], "configurations": [{"lang": "en", "value": "attacker has permission to create or reindex an HNSW index with parallel workers"}], "credits": [{"lang": "en", "value": "Thanks to chungkn from OneMount Group for reporting this."}]}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "Buffer overflow in parallel HNSW index build in pgvector 0.6.0 through 0.8.1 allows a database user to leak sensitive data from other relations or crash the database server."}], "id": "CVE-2026-3172", "lastModified": "2026-02-25T21:16:44.857", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.2, "source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007", "type": "Secondary"}]}, "published": "2026-02-25T21:16:44.857", "references": [{"source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007", "url": "https://github.com/pgvector/pgvector/issues/959"}], "sourceIdentifier": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-191"}, {"lang": "en", "value": "CWE-787"}], "source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007", "type": "Secondary"}]}

{}

{}