Parse Server 9.0.0 before 9.10.5-alpha.4 LiveQuery Information Disclosure via $or Subscriptions

{
  "id": "6f3e7969e56fa9b1b7ae1722d4d336c8cd4d94a250923fa1f6097915667aa084",
  "url": "https://www.cve.org/CVERecord?id=CVE-2026-116161",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Parse Server 9.0.0 before 9.10.5-alpha.4 LiveQuery Information Disclosure via $or Subscriptions",
    "summary": "Parse Server before 8.6.103 and 9.0.0 before 9.10.5-alpha.4 contains an information disclosure vulnerability in LiveQuery. Its subscription hash omits constraints next to a $or operator, including the _Session owner filter and beforeSubscribe constraints, so distinct subscriptions are grouped together. Authenticated clients subscribing with $or queries can receive other users' events, including session tokens usable for impersonation.",
    "evidence": "cve:CVE-2026-116161",
    "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-2026-116161",
      "aliases": [
        "CVE-2026-116161"
      ],
      "metrics": [
        {
          "format": "CVSS",
          "cvssV4_0": {
            "version": "4.0",
            "baseScore": 6,
            "attackVector": "NETWORK",
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
            "userInteraction": "NONE",
            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
            "privilegesRequired": "LOW",
            "subIntegrityImpact": "NONE",
            "vulnIntegrityImpact": "NONE",
            "subAvailabilityImpact": "NONE",
            "vulnAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "vulnConfidentialityImpact": "HIGH"
          }
        }
      ],
      "affected": [
        {
          "vendor": "parse-community",
          "product": "parse-server",
          "versions": [
            {
              "status": "affected",
              "version": "9.0.0",
              "lessThan": "9.10.5-alpha.4",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "9.10.5-alpha.4",
              "versionType": "semver"
            }
          ],
          "packageURL": "pkg:npm/parse-server",
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "parse-community",
          "product": "parse-server",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "8.6.103",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "8.6.103",
              "versionType": "semver"
            }
          ],
          "packageURL": "pkg:npm/parse-server",
          "defaultStatus": "unaffected"
        }
      ],
      "modified": "2026-10-25T13:20:06.298Z",
      "provider": "cve",
      "references": [
        "https://github.com/parse-community/parse-server/security/advisories/GHSA-349r-988w-x3jp",
        "https://www.vulncheck.com/advisories/parse-server-9.0.0-before-9.10.5-alpha.4-livequery-information-disclosure-via-or-subscriptions"
      ],
      "provider_metadata": {
        "cna": {
          "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
          "shortName": "VulnCheck",
          "dateUpdated": "2026-10-25T13:20:06.298Z"
        }
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-116161",
        "evidence": "/cveMetadata/cveId"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/containers/cna/metrics"
  },
  "source_id": "core-cve",
  "document_id": 146780,
  "published_at": "2026-10-25T13:20:06.298+00:00"
}