{
  "containers": {
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        {
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          "product": "pgvector",
          "vendor": "n/a",
          "versions": [
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              "lessThan": "0.8.2",
              "status": "affected",
              "version": "0.8.0",
              "versionType": "semver"
            },
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              "version": "0.7.0",
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              "version": "0.6.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "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."
        }
      ],
      "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."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
            "version": "3.1"
          },
          "format": "CVSS"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-191",
              "description": "Integer Underflow or Wraparound",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-787",
              "description": "Out-of-bounds Write",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-02-25T20:59:10.051Z",
        "orgId": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007",
        "shortName": "PostgreSQL"
      },
      "references": [
        {
          "url": "https://github.com/pgvector/pgvector/issues/959"
        }
      ],
      "title": "pgvector buffer overflow in parallel HNSW index build"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007",
    "assignerShortName": "PostgreSQL",
    "cveId": "CVE-2026-3172",
    "datePublished": "2026-02-25T20:59:10.051Z",
    "dateReserved": "2026-02-24T22:42:24.733Z",
    "dateUpdated": "2026-02-25T20:59:10.051Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-3172\",\"sourceIdentifier\":\"f86ef6dc-4d3a-42ad-8f28-e6d5547a5007\",\"published\":\"2026-02-25T21:16:44.857\",\"lastModified\":\"2026-02-25T21:16:44.857\",\"vulnStatus\":\"Received\",\"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.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"f86ef6dc-4d3a-42ad-8f28-e6d5547a5007\",\"type\":\"Secondary\",\"cvssData\":{\"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\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.8,\"impactScore\":5.2}]},\"weaknesses\":[{\"source\":\"f86ef6dc-4d3a-42ad-8f28-e6d5547a5007\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-191\"},{\"lang\":\"en\",\"value\":\"CWE-787\"}]}],\"references\":[{\"url\":\"https://github.com/pgvector/pgvector/issues/959\",\"source\":\"f86ef6dc-4d3a-42ad-8f28-e6d5547a5007\"}]}}"
  }
}