Vulnerability from bitnami_vulndb
Published
2026-04-06 14:49
Modified
2026-04-06 15:13
Summary
Parse Server: GraphQL complexity validator exponential fragment traversal DoS
Details

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.68 and 9.7.0, the GraphQL query complexity validator can be exploited to cause a denial-of-service by sending a crafted query with binary fan-out fragment spreads. A single unauthenticated request can block the Node.js event loop for seconds, denying service to all concurrent users. This only affects deployments that have enabled the requestComplexity.graphQLDepth or requestComplexity.graphQLFields configuration options. This issue has been patched in versions 8.6.68 and 9.7.0.

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Bitnami",
        "name": "parse",
        "purl": "pkg:bitnami/parse"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "8.6.68"
            },
            {
              "introduced": "9.0.0"
            },
            {
              "fixed": "9.7.0"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "severity": [
        {
          "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "type": "CVSS_V4"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-34573"
  ],
  "database_specific": {
    "cpes": [
      "cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:node.js:*:*"
    ],
    "severity": "High"
  },
  "details": "Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.68 and 9.7.0, the GraphQL query complexity validator can be exploited to cause a denial-of-service by sending a crafted query with binary fan-out fragment spreads. A single unauthenticated request can block the Node.js event loop for seconds, denying service to all concurrent users. This only affects deployments that have enabled the requestComplexity.graphQLDepth or requestComplexity.graphQLFields configuration options. This issue has been patched in versions 8.6.68 and 9.7.0.",
  "id": "BIT-parse-2026-34573",
  "modified": "2026-04-06T15:13:09.641Z",
  "published": "2026-04-06T14:49:33.069Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/parse-community/parse-server/commit/ea15412795f34594cc8a674fe858d445675e0295"
    },
    {
      "type": "WEB",
      "url": "https://github.com/parse-community/parse-server/commit/f759bda075298ec44e2b4fb57659a0c56620483b"
    },
    {
      "type": "WEB",
      "url": "https://github.com/parse-community/parse-server/pull/10344"
    },
    {
      "type": "WEB",
      "url": "https://github.com/parse-community/parse-server/pull/10345"
    },
    {
      "type": "WEB",
      "url": "https://github.com/parse-community/parse-server/security/advisories/GHSA-mfj6-6p54-m98c"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-34573"
    }
  ],
  "schema_version": "1.6.2",
  "summary": "Parse Server: GraphQL complexity validator exponential fragment traversal DoS"
}


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Detection rules are retrieved from Rulezet.