Security advisory

{
  "id": "f27364a00a340456571ff89e9e58ca4e35bb29ea55b9dacdec64a32ffb90c3ad",
  "url": "https://osv.dev/vulnerability/CVE-2021-39187",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-39187",
    "summary": "Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to version 4.10.3, Parse Server crashes when if a query request contains an invalid value for the `explain` option. This is due to a bug in the MongoDB Node.js driver which throws an exception that Parse Server cannot catch. There is a patch for this issue in version 4.10.3. No workarounds aside from upgrading are known to exist.",
    "evidence": "osv:CVE-2021-39187",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2021-39187",
      "aliases": [
        "BIT-parse-2021-39187",
        "CVE-2021-39187",
        "GHSA-xqp8-w826-hh6x"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/parse-community/parse-server",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "c71ae7d478ac27ed9cfdd5b0bb0e461c846d040e"
                },
                {
                  "fixed": "308668c89474223e2448be92d6823b52c1c313ec"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:node.js:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "4.10.3"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "308668c89474223e2448be92d6823b52c1c313ec"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "c71ae7d478ac27ed9cfdd5b0bb0e461c846d040e"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "4.10.3"
                  }
                ]
              }
            }
          ],
          "versions": [
            "4.10.2",
            "4.10.1",
            "4.10.0",
            "4.5.2",
            "4.5.0",
            "4.4.0",
            "4.3.0",
            "4.2.0",
            "4.1.0",
            "4.0.2",
            "4.0.1",
            "4.0.0",
            "3.10.0",
            "3.9.0",
            "3.8.0",
            "3.7.2",
            "3.7.1",
            "3.7.0",
            "3.6.0",
            "3.5.0",
            "3.4.0",
            "3.4.1",
            "3.3.0",
            "3.2.3",
            "3.2.2",
            "3.2.1",
            "3.2.0",
            "3.1.3",
            "3.1.2",
            "3.1.1",
            "3.1.0",
            "3.0.0",
            "2.8.2",
            "2.8.0",
            "2.7.4",
            "2.7.3",
            "2.7.2",
            "2.7.1",
            "2.7.0",
            "2.6.5",
            "2.6.4",
            "2.6.3",
            "2.6.2",
            "2.6.1",
            "2.6.0",
            "2.5.3",
            "2.5.2",
            "2.5.1",
            "2.5.0",
            "2.4.2",
            "2.4.1",
            "2.4.0",
            "2.3.8",
            "2.3.7",
            "2.3.6",
            "2.3.5",
            "2.3.4",
            "2.3.3",
            "2.3.2",
            "2.3.1",
            "2.2.25",
            "2.2.25-beta.1",
            "2.2.24",
            "2.2.23",
            "2.2.22",
            "2.2.21",
            "2.2.20",
            "2.2.19",
            "2.2.18",
            "2.2.17",
            "2.2.16",
            "2.2.15",
            "2.2.14",
            "2.2.13",
            "2.2.12",
            "2.2.11",
            "2.2.10",
            "2.2.9",
            "2.2.8",
            "2.2.7",
            "2.2.6",
            "2.2.5",
            "2.2.4",
            "2.2.3",
            "2.2.2",
            "2.2.1",
            "2.2.0",
            "2.1.6",
            "2.1.5",
            "2.1.4",
            "2.1.3",
            "2.1.2",
            "2.1.1",
            "2.1.0",
            "2.0.8",
            "2.0.7",
            "2.0.3",
            "2.0.6",
            "2.0.5",
            "2.0.4",
            "2.0.2",
            "2.0.1",
            "2.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-39187.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:53.339792694Z",
      "provider": "osv",
      "references": [
        "https://github.com/parse-community/parse-server/releases/tag/4.10.3",
        "https://github.com/parse-community/parse-server/security/advisories/GHSA-xqp8-w826-hh6x",
        "https://github.com/parse-community/parse-server/commit/308668c89474223e2448be92d6823b52c1c313ec",
        "https://jira.mongodb.org/browse/NODE-3463"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-39187",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 386371,
  "published_at": "2021-09-02T16:15:07.54+00:00"
}