CVE-2026-33508
Parse Server: LiveQuery subscription query depth bypass
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
14th
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.
| CWE | CWE-674 |
| Vendor | parse-community |
| Product | parse-server |
| Published | Mar 24, 2026 |
| Last Updated | Mar 25, 2026 |
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Affected Versions
parse-community / parse-server
< 8.6.56 >= 9.0.0, < 9.6.0-alpha.45
References
github.com: https://github.com/parse-community/parse-server/security/advisories/GHSA-6qh5-m6g3-xhq6 github.com: https://github.com/parse-community/parse-server/pull/10259 github.com: https://github.com/parse-community/parse-server/pull/10260 github.com: https://github.com/parse-community/parse-server/commit/060d27053fb0fadf613c25aabab7fe0c82b7a899 github.com: https://github.com/parse-community/parse-server/commit/2126fe4e12f9b399dc6b4b6a3fa70cb1825f159b