CVE-2026-29793
NoSQL Injection via WebSocket id Parameter in MongoDB Adapter
- State
- Published
- Severity
- 9.3 Critical
- Published
- Mar 10, 2026
- Updated
- Mar 11, 2026
- Reserved
- Mar 4, 2026
Description
Feathersjs is a framework for creating web APIs and real-time applications with TypeScript or JavaScript. From 5.0.0 to before 5.0.42, Socket.IO clients can send arbitrary JavaScript objects as the id argument to any service method (get, patch, update, remove). The transport layer performs no type checking on this argument. When the service uses the MongoDB adapter, these objects pass through getObjectId() and land directly in the MongoDB query as operators. Sending {$ne: null} as the id matches every document in the collection. This vulnerability is fixed in 5.0.42.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 9.3 Critical | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N | GitHub_M |
Weaknesses
- CWE-943 Improper Neutralization of Special Elements in Data Query Logic
Affected Products
| Product | Versions |
|---|---|
mongodb@feathersjs |
|
References
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