Security advisory

{
  "id": "9cb39275d76e5cfc5d2a8a8e41d1d83a5f4d2cc8b95a2ddb5767150838fde579",
  "url": "https://osv.dev/vulnerability/CVE-2019-20923",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2019-20923",
    "summary": "A user authorized to perform database queries may trigger denial of service by issuing specially crafted queries, which throw unhandled Javascript exceptions containing types intended to be scoped to the Javascript engine's internals. This issue affects MongoDB Server v4.0 versions prior to 4.0.7.",
    "evidence": "osv:CVE-2019-20923",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2019-20923",
      "aliases": [
        "CVE-2019-20923"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/mongodb/mongo",
              "type": "GIT",
              "events": [
                {
                  "introduced": "3b07af3d4f471ae89e8186d33bbb1d5259597d51"
                },
                {
                  "fixed": "1b82c812a9c0bbf6dc79d5400de9ea99e6ffa025"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "4.0.0"
                      },
                      {
                        "fixed": "4.0.7"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "r4.0.7-rc0",
            "r4.0.6-rc1",
            "r4.0.6",
            "r4.0.6-rc0",
            "r4.0.5-rc1",
            "r4.0.5",
            "r4.0.5-rc0",
            "r4.0.4-rc2",
            "r4.0.4",
            "r4.0.4-rc1",
            "r4.0.4-rc0",
            "r4.0.3-rc0",
            "r4.0.3",
            "r4.0.2-rc0",
            "r4.0.2",
            "r4.0.1-rc1",
            "r4.0.1",
            "r4.0.1-rc0",
            "r4.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-20923.json",
            "vanir_signatures": [
              {
                "id": "CVE-2019-20923-4f349fd3",
                "digest": {
                  "threshold": 0.9,
                  "line_hashes": [
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                  ]
                },
                "source": "https://github.com/mongodb/mongo/commit/1b82c812a9c0bbf6dc79d5400de9ea99e6ffa025",
                "target": {
                  "file": "src/mongo/db/pipeline/document_source_check_resume_token.cpp"
                },
                "deprecated": false,
                "signature_type": "Line",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2019-20923-d68597b1",
                "digest": {
                  "length": 1575,
                  "function_hash": "55071997004148880126498516853248914450"
                },
                "source": "https://github.com/mongodb/mongo/commit/1b82c812a9c0bbf6dc79d5400de9ea99e6ffa025",
                "target": {
                  "file": "src/mongo/db/pipeline/document_source_check_resume_token.cpp",
                  "function": "compareAgainstClientResumeToken"
                },
                "deprecated": false,
                "signature_type": "Function",
                "signature_version": "v1"
              }
            ],
            "vanir_signatures_modified": "2026-10-24T14:03:43Z"
          }
        }
      ],
      "modified": "2026-10-24T14:03:43.721494811Z",
      "provider": "osv",
      "references": [
        "https://jira.mongodb.org/browse/SERVER-39481"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:*"
            ],
            "vendor_product": "mongodb:mongodb",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "4.0.0"
                  },
                  {
                    "fixed": "4.0.7"
                  }
                ],
                "source": "CPE_RANGE"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2019-20923",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 442845,
  "published_at": "2020-11-23T16:15:12.807+00:00"
}