Vulnerability-Lookup

CVE-2026-30850 (GCVE-0-2026-30850)

Vulnerability from cvelistv5 – Published: 2026-03-07 16:21 – Updated: 2026-03-09 18:25

Title

Parse Server: File metadata endpoint bypasses `beforeFind` / `afterFind` trigger authorization

Summary

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.9 and 9.5.0-alpha.9, the file metadata endpoint (GET /files/:appId/metadata/:filename) does not enforce beforeFind / afterFind file triggers. When these triggers are used as access-control gates, the metadata endpoint bypasses them entirely, allowing unauthorized access to file metadata. This issue has been patched in versions 8.6.9 and 9.5.0-alpha.9.

Severity ?

6.3 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

CWE

CWE-862 - Missing Authorization

Assigner

GitHub_M

References

URL

Tags

https://github.com/parse-community/parse-server/s…

x_refsource_CONFIRM

Impacted products

	Vendor	Product	Version
	parse-community	parse-server	Affected: < 8.6.9 Affected: < 9.5.0-alpha.9

Show details on NVD website

JSON

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GHSA-HWX8-Q9CG-MQMC

Vulnerability from github – Published: 2026-03-09 17:42 – Updated: 2026-03-09 17:42

Summary

Parse Server: File metadata endpoint bypasses `beforeFind` / `afterFind` trigger authorization

Details

Impact

The file metadata endpoint (GET /files/:appId/metadata/:filename) does not enforce beforeFind / afterFind file triggers. When these triggers are used as access-control gates, the metadata endpoint bypasses them entirely, allowing unauthorized access to file metadata.

This affects any deployment that relies on Parse.Cloud.beforeFind(Parse.File, ...) to restrict file access. Only file metadata (user-defined key-value pairs set via addMetadata) is exposed; file content remains protected.

Patches

The metadata handler now runs beforeFind and afterFind triggers and returns HTTP 403 when a trigger denies access.

Workarounds

Disable the metadata endpoint by overriding the route with a middleware that rejects all requests:

// Add before mounting Parse Server
app.get('/parse/files/:appId/metadata/:filename', (req, res) => {
  res.status(403).json({ error: 'Forbidden' });
});

Adjust the path prefix (/parse) to match your mountPath.

References

GitHub security advisory: https://github.com/parse-community/parse-server/security/advisories/GHSA-hwx8-q9cg-mqmc
Fix Parse Server 9: https://github.com/parse-community/parse-server/releases/tag/9.5.0-alpha.9
Fix Parse Server 8: https://github.com/parse-community/parse-server/releases/tag/8.6.9

Severity ?

6.3 (Medium)


                  
                    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "parse-server"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "8.6.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "npm",
        "name": "parse-server"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "9.0.0-alpha.1"
            },
            {
              "fixed": "9.5.0-alpha.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-30850"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-862"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-03-09T17:42:03Z",
    "nvd_published_at": "2026-03-07T17:15:52Z",
    "severity": "MODERATE"
  },
  "details": "### Impact\n\nThe file metadata endpoint (GET `/files/:appId/metadata/:filename`) does not enforce `beforeFind` / `afterFind` file triggers. When these triggers are used as access-control gates, the metadata endpoint bypasses them entirely, allowing unauthorized access to file metadata.\n\nThis affects any deployment that relies on `Parse.Cloud.beforeFind(Parse.File, ...)` to restrict file access. Only file metadata (user-defined key-value pairs set via addMetadata) is exposed; file content remains protected.\n\n### Patches\n\nThe metadata handler now runs `beforeFind` and `afterFind` triggers and returns HTTP 403 when a trigger denies access.\n\n### Workarounds\n\nDisable the `metadata` endpoint by overriding the route with a middleware that rejects all requests:\n\n```js\n// Add before mounting Parse Server\napp.get(\u0027/parse/files/:appId/metadata/:filename\u0027, (req, res) =\u003e {\n  res.status(403).json({ error: \u0027Forbidden\u0027 });\n});\n```\n\nAdjust the path prefix (`/parse`) to match your mountPath.\n\n### References\n\n- GitHub security advisory: https://github.com/parse-community/parse-server/security/advisories/GHSA-hwx8-q9cg-mqmc\n- Fix Parse Server 9: https://github.com/parse-community/parse-server/releases/tag/9.5.0-alpha.9\n- Fix Parse Server 8: https://github.com/parse-community/parse-server/releases/tag/8.6.9",
  "id": "GHSA-hwx8-q9cg-mqmc",
  "modified": "2026-03-09T17:42:03Z",
  "published": "2026-03-09T17:42:03Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/parse-community/parse-server/security/advisories/GHSA-hwx8-q9cg-mqmc"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-30850"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/parse-community/parse-server"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Parse Server: File metadata endpoint bypasses `beforeFind` / `afterFind` trigger authorization"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

CVE-2026-30850 (GCVE-0-2026-30850)

GHSA-HWX8-Q9CG-MQMC

Impact

Patches

Workarounds

References

Tags

Sightings

Nomenclature