Parse Server: File creation and deletion bypasses `readOnlyMasterKey` write restriction
Description
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.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
parse-servernpm | >= 9.0.0, < 9.5.0-alpha.3 | 9.5.0-alpha.3 |
parse-servernpm | < 8.6.5 | 8.6.5 |
Affected products
1- Range: < 8.6.5
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
5- github.com/advisories/GHSA-xfh7-phr7-gr2xghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-30228ghsaADVISORY
- github.com/parse-community/parse-server/releases/tag/8.6.5ghsax_refsource_MISCWEB
- github.com/parse-community/parse-server/releases/tag/9.5.0-alpha.3ghsax_refsource_MISCWEB
- github.com/parse-community/parse-server/security/advisories/GHSA-xfh7-phr7-gr2xghsax_refsource_CONFIRMWEB
News mentions
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