Vulnerability Description
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.56 and 9.6.0-alpha.45, Parse Server's LiveQuery component does not enforce the requestComplexity.queryDepth configuration setting when processing WebSocket subscription requests. An attacker can send a subscription with deeply nested logical operators, causing excessive recursion and CPU consumption that degrades or disrupts service availability. This issue has been patched in versions 8.6.56 and 9.6.0-alpha.45.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Parseplatform | Parse-Server | < 8.6.56 |
Related Weaknesses (CWE)
References
- https://github.com/parse-community/parse-server/commit/060d27053fb0fadf613c25aabPatch
- https://github.com/parse-community/parse-server/commit/2126fe4e12f9b399dc6b4b6a3Patch
- https://github.com/parse-community/parse-server/pull/10259Issue Tracking
- https://github.com/parse-community/parse-server/pull/10260Issue Tracking
- https://github.com/parse-community/parse-server/security/advisories/GHSA-6qh5-m6Vendor Advisory
FAQ
What is CVE-2026-33508?
CVE-2026-33508 is a vulnerability with a CVSS score of 7.5 (HIGH). Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.56 and 9.6.0-alpha.45, Parse Server's LiveQuery component does not enforce...
How severe is CVE-2026-33508?
CVE-2026-33508 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-33508?
Check the references section above for vendor advisories and patch information. Affected products include: Parseplatform Parse-Server.