High severityNVD Advisory· Published Mar 24, 2026· Updated Mar 25, 2026
Parse Server: LiveQuery subscription query depth bypass
CVE-2026-33508
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
parse-servernpm | >= 9.0.0, < 9.6.0-alpha.45 | 9.6.0-alpha.45 |
parse-servernpm | < 8.6.56 | 8.6.56 |
Affected products
3- osv-coords2 versions
< 8.6.56+ 1 more
- (no CPE)range: < 8.6.56
- (no CPE)range: >= 9.0.0, < 9.6.0-alpha.45
- Range: < 8.6.56
Patches
Vulnerability mechanics
References
7- github.com/advisories/GHSA-6qh5-m6g3-xhq6ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-33508ghsaADVISORY
- github.com/parse-community/parse-server/commit/060d27053fb0fadf613c25aabab7fe0c82b7a899ghsax_refsource_MISCWEB
- github.com/parse-community/parse-server/commit/2126fe4e12f9b399dc6b4b6a3fa70cb1825f159bghsax_refsource_MISCWEB
- github.com/parse-community/parse-server/pull/10259ghsax_refsource_MISCWEB
- github.com/parse-community/parse-server/pull/10260ghsax_refsource_MISCWEB
- github.com/parse-community/parse-server/security/advisories/GHSA-6qh5-m6g3-xhq6ghsax_refsource_CONFIRMWEB
News mentions
0No linked articles in our index yet.