parse-community parse-server up to 8.6.4/9.5.0-alpha.2 File API /files/:filename authorization

Summaryinfo

A vulnerability labeled as problematic has been found in parse-community parse-server up to 8.6.4/9.5.0-alpha.2. This issue affects some unknown processing of the file /files/:filename of the component File API. Such manipulation leads to authorization. This vulnerability is uniquely identified as CVE-2026-30228. The attack can be launched remotely. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in parse-community parse-server up to 8.6.4/9.5.0-alpha.2. Affected by this issue is an unknown part of the file /files/:filename of the component File API. The manipulation with an unknown input leads to a authorization vulnerability. Using CWE to declare the problem leads to CWE-863. The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions. Impacted is integrity, and availability. CVE summarizes:

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.5 and 9.5.0-alpha.3, the readOnlyMasterKey can be used to create and delete files via the Files API (POST /files/:filename, DELETE /files/:filename). This bypasses the read-only restriction which violates the access scope of the readOnlyMasterKey. Any Parse Server deployment that uses readOnlyMasterKey and exposes the Files API is affected. An attacker with access to the readOnlyMasterKey can upload arbitrary files or delete existing files. This issue has been patched in versions 8.6.5 and 9.5.0-alpha.3.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-30228 since 03/04/2026. The exploitation is known to be easy. The attack may be launched remotely. Additional levels of successful authentication are required for exploitation. Technical details are known, but there is no available exploit.

Upgrading to version 8.6.5 or 9.5.0-alpha.3 eliminates this vulnerability.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

• parse-community

Name

• parse-server

Version

• 8.6.0
• 8.6.1
• 8.6.2
• 8.6.3
• 8.6.4
• 9.5.0-alpha.0
• 9.5.0-alpha.1
• 9.5.0-alpha.2

Website

• Product: https://github.com/parse-community/parse-server/

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