Vulnerability Description
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.6 and 9.5.0-alpha.4, the readOnlyMasterKey can call POST /loginAs to obtain a valid session token for any user. This allows a read-only credential to impersonate arbitrary users with full read and write access to their data. Any Parse Server deployment that uses readOnlyMasterKey is affected. This issue has been patched in versions 8.6.6 and 9.5.0-alpha.4.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Parseplatform | Parse-Server | < 8.6.6 |
Related Weaknesses (CWE)
References
- https://github.com/parse-community/parse-server/releases/tag/8.6.6Release NotesProduct
- https://github.com/parse-community/parse-server/releases/tag/9.5.0-alpha.4Release NotesProduct
- https://github.com/parse-community/parse-server/security/advisories/GHSA-79wj-8rVendor Advisory
FAQ
What is CVE-2026-30229?
CVE-2026-30229 is a vulnerability with a CVSS score of 7.2 (HIGH). Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.6 and 9.5.0-alpha.4, the readOnlyMasterKey can call POST /loginAs to obtai...
How severe is CVE-2026-30229?
CVE-2026-30229 has been rated HIGH with a CVSS base score of 7.2/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-30229?
Check the references section above for vendor advisories and patch information. Affected products include: Parseplatform Parse-Server.