CVE-2026-33508
HIGH EPSS 26.4%
Published Mar 24, 20263mo ago · Modified Jun 17, 20261w ago
8.2 CVSS 4.0
Published Mar 24, 2026 3mo ago
Last Modified Jun 17, 2026 1w ago
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 Details
Base Score
Exploitability
Impact
Vector string
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X
Threat Intelligence
EPSS Exploit Probability
26.4% percentile
Exploit & Patch Status
No Known Exploit
Patch Available
Weaknesses 1
CWE-674
Affected Products 46
| Vendor | Product | Version | Range |
|---|---|---|---|
| parseplatform | parse-server | * | <8.6.56 |
| parseplatform | parse-server | * | ≥9.0.0 – <9.6.0 |
| parseplatform | parse-server | 9.6.0 | any |
| parseplatform | parse-server | 9.6.0 | any |
| parseplatform | parse-server | 9.6.0 | any |
| parseplatform | parse-server | 9.6.0 | any |
| parseplatform | parse-server | 9.6.0 | any |
| parseplatform | parse-server | 9.6.0 | any |
| parseplatform | parse-server | 9.6.0 | any |
| parseplatform | parse-server | 9.6.0 | any |
| parseplatform | parse-server | 9.6.0 | any |
| parseplatform | parse-server | 9.6.0 | any |
| parseplatform | parse-server | 9.6.0 | any |
| parseplatform | parse-server | 9.6.0 | any |
| parseplatform | parse-server | 9.6.0 | any |
| parseplatform | parse-server | 9.6.0 | any |
| parseplatform | parse-server | 9.6.0 | any |
| parseplatform | parse-server | 9.6.0 | any |
| parseplatform | parse-server | 9.6.0 | any |
| parseplatform | parse-server | 9.6.0 | any |
| parseplatform | parse-server | 9.6.0 | any |
| parseplatform | parse-server | 9.6.0 | any |
| parseplatform | parse-server | 9.6.0 | any |
| parseplatform | parse-server | 9.6.0 | any |
| parseplatform | parse-server | 9.6.0 | any |
| parseplatform | parse-server | 9.6.0 | any |
| parseplatform | parse-server | 9.6.0 | any |
| parseplatform | parse-server | 9.6.0 | any |
| parseplatform | parse-server | 9.6.0 | any |
| parseplatform | parse-server | 9.6.0 | any |
| parseplatform | parse-server | 9.6.0 | any |
| parseplatform | parse-server | 9.6.0 | any |
| parseplatform | parse-server | 9.6.0 | any |
| parseplatform | parse-server | 9.6.0 | any |
| parseplatform | parse-server | 9.6.0 | any |
| parseplatform | parse-server | 9.6.0 | any |
| parseplatform | parse-server | 9.6.0 | any |
| parseplatform | parse-server | 9.6.0 | any |
| parseplatform | parse-server | 9.6.0 | any |
| parseplatform | parse-server | 9.6.0 | any |
| parseplatform | parse-server | 9.6.0 | any |
| parseplatform | parse-server | 9.6.0 | any |
| parseplatform | parse-server | 9.6.0 | any |
| parseplatform | parse-server | 9.6.0 | any |
| parseplatform | parse-server | 9.6.0 | any |
| parseplatform | parse-server | 9.6.0 | any |
References 5
- github.com https://github.com/parse-community/parse-server/commit/060d27053fb0fadf613c25aabab7fe0c82b7a899
- github.com https://github.com/parse-community/parse-server/commit/2126fe4e12f9b399dc6b4b6a3fa70cb1825f159b
- 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/security/advisories/GHSA-6qh5-m6g3-xhq6
Remediation
- github.com https://github.com/parse-community/parse-server/commit/060d27053fb0fadf613c25aabab7fe0c82b7a899
- github.com https://github.com/parse-community/parse-server/commit/2126fe4e12f9b399dc6b4b6a3fa70cb1825f159b