Parse Server 9.0.0 before 9.10.5-alpha.6 ACL Bypass via $relatedTo Query

{
  "id": "5d5c36f9bb84c4880275c9dfd36f4f927755e3ccac4095afd198ce9fc8ac86d4",
  "url": "https://www.cve.org/CVERecord?id=CVE-2026-116801",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Parse Server 9.0.0 before 9.10.5-alpha.6 ACL Bypass via $relatedTo Query",
    "summary": "Parse Server before 8.6.105 and 9.0.0 before 9.10.5-alpha.6 does not validate the owning object reference in $relatedTo relation queries, so supplying a query operator instead of an object ID bypasses the owning-object ACL check. A client with read access to at least one object of the owning class can disclose which readable objects are linked to owning objects it cannot read.",
    "evidence": "cve:CVE-2026-116801",
    "products": [
      {
        "name": {
          "value": "parse-server",
          "evidence": "/containers/cna/affected/0/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      },
      {
        "name": {
          "value": "parse-server",
          "evidence": "/containers/cna/affected/1/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-116801",
      "aliases": [
        "CVE-2026-116801"
      ],
      "metrics": [
        {
          "format": "CVSS",
          "cvssV4_0": {
            "version": "4.0",
            "baseScore": 5.3,
            "attackVector": "NETWORK",
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
            "userInteraction": "NONE",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "privilegesRequired": "LOW",
            "subIntegrityImpact": "NONE",
            "vulnIntegrityImpact": "NONE",
            "subAvailabilityImpact": "NONE",
            "vulnAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "vulnConfidentialityImpact": "LOW"
          }
        },
        {
          "format": "CVSS",
          "cvssV3_1": {
            "scope": "UNCHANGED",
            "version": "3.1",
            "baseScore": 4.3,
            "attackVector": "NETWORK",
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
            "integrityImpact": "NONE",
            "userInteraction": "NONE",
            "attackComplexity": "LOW",
            "availabilityImpact": "NONE",
            "privilegesRequired": "LOW",
            "confidentialityImpact": "LOW"
          }
        }
      ],
      "affected": [
        {
          "vendor": "parse-community",
          "product": "parse-server",
          "versions": [
            {
              "status": "affected",
              "version": "9.0.0",
              "lessThan": "9.10.5-alpha.6",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "9.10.5-alpha.6",
              "versionType": "semver"
            }
          ],
          "packageURL": "pkg:npm/parse-server",
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "parse-community",
          "product": "parse-server",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "8.6.105",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "8.6.105",
              "versionType": "semver"
            }
          ],
          "packageURL": "pkg:npm/parse-server",
          "defaultStatus": "unaffected"
        }
      ],
      "modified": "2026-10-27T14:16:07.428Z",
      "provider": "cve",
      "references": [
        "https://github.com/parse-community/parse-server/security/advisories/GHSA-58m4-cqvw-4vgh",
        "https://www.vulncheck.com/advisories/parse-server-9.0.0-before-9.10.5-alpha.6-acl-bypass-via-relatedto-query"
      ],
      "provider_metadata": {
        "adp": [
          {
            "title": "CISA ADP Vulnrichment",
            "metrics": [
              {
                "other": {
                  "type": "ssvc",
                  "content": {
                    "id": "CVE-2026-116801",
                    "role": "CISA Coordinator",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "version": "2.0.3",
                    "timestamp": "2026-10-27T13:42:07.586416Z"
                  }
                }
              }
            ],
            "providerMetadata": {
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP",
              "dateUpdated": "2026-10-27T14:16:07.428Z"
            }
          }
        ],
        "cna": {
          "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
          "shortName": "VulnCheck",
          "dateUpdated": "2026-10-26T23:05:33.735Z"
        }
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-116801",
        "evidence": "/cveMetadata/cveId"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/containers/cna/metrics"
  },
  "source_id": "core-cve",
  "document_id": 392656,
  "published_at": "2026-10-26T23:05:33.735+00:00"
}