Parse Server: Server option routeAllowList is bypassable through batch sub-requests

{
  "id": "cdfcd3b296b4d435de5dc1553c72b4e3fedb6331bec7c9613499b0feaff71dce",
  "url": "https://osv.dev/vulnerability/CVE-2026-50008",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Parse Server: Server option routeAllowList is bypassable through batch sub-requests",
    "summary": "Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. From version 9.8.0 to before version 9.9.1-alpha.3, the routeAllowList server option restricts external client access to a configured list of REST API routes. The check is only enforced as Express middleware against the outer HTTP request URL, so the /batch handler dispatches each sub-request to the internal router without re-running the allow-list check. An external caller whose outer route matches batch can issue batch sub-requests to any REST API route that the operator omitted from the allow-list. Authentication, ACL, CLP, and other inner-route authorization controls still apply — only the operator-configured route firewall is bypassed. This issue has been patched in version 9.9.1-alpha.3.",
    "evidence": "osv:CVE-2026-50008",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-50008",
      "aliases": [
        "BIT-parse-2026-50008",
        "CVE-2026-50008",
        "GHSA-p84r-h6rx-f2xr"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/parse-community/parse-server",
              "type": "GIT",
              "events": [
                {
                  "introduced": "7c3b43d2633cfe96a5bd1e853b84fa34846a03bd"
                },
                {
                  "fixed": "1e0d6cee9bd898e418dff9eab9211599d5f77abd"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "9.8.0"
                      },
                      {
                        "fixed": "9.9.1-alpha.3"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "9.9.1-alpha.3"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
          "versions": [
            "9.9.0",
            "9.9.1-alpha.2",
            "9.9.1-alpha.1",
            "9.8.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-50008.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:30.404009334Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/50xxx/CVE-2026-50008.json",
        "https://github.com/parse-community/parse-server/security/advisories/GHSA-p84r-h6rx-f2xr",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-50008",
        "https://github.com/parse-community/parse-server/pull/10482"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-863"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/50xxx/CVE-2026-50008.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-50008",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 497167,
  "published_at": "2026-06-12T18:22:44.188+00:00"
}