Vulnerability Description
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.54 and 9.6.0-alpha.43, an attacker can subscribe to LiveQuery with a watch parameter targeting a protected field. Although the protected field value is properly stripped from event payloads, the presence or absence of update events reveals whether the protected field changed, creating a binary oracle. For boolean protected fields, the timing of change events is equivalent to knowing the field value. This issue has been patched in versions 8.6.54 and 9.6.0-alpha.43.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Parseplatform | Parse-Server | < 8.6.54 |
Related Weaknesses (CWE)
References
- https://github.com/parse-community/parse-server/commit/0c0a0a5a37ca821d2553119f2Patch
- https://github.com/parse-community/parse-server/commit/c62eacaf38de86913f0924058Patch
- https://github.com/parse-community/parse-server/pull/10253Issue Tracking
- https://github.com/parse-community/parse-server/pull/10254Issue Tracking
- https://github.com/parse-community/parse-server/security/advisories/GHSA-qpc3-fgVendor Advisory
FAQ
What is CVE-2026-33429?
CVE-2026-33429 is a vulnerability with a CVSS score of 5.3 (MEDIUM). Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.54 and 9.6.0-alpha.43, an attacker can subscribe to LiveQuery with a watch...
How severe is CVE-2026-33429?
CVE-2026-33429 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-33429?
Check the references section above for vendor advisories and patch information. Affected products include: Parseplatform Parse-Server.