{
    "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": "2026-02-26T15:04:08.481Z"
    },
    "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."
                }
            ]
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-02-26T15:03:28.719764Z",
                                "id": "CVE-2026-3172",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-02-26T15:04:08.481Z"
                }
            }
        ]
    }
}