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CVE-2026-29793— NoSQL Injection via WebSocket id Parameter in MongoDB Adapter

AI Predicted 9.8 Difficulty: Easy EPSS 0.02% · P7

Possible ATT&CK Techniques 1AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-29793

Vulnerability Information
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Vulnerability Title
NoSQL Injection via WebSocket id Parameter in MongoDB Adapter
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
数据查询逻辑中特殊元素的不当中和
Source: NVD (National Vulnerability Database)
Vulnerability Title
Feathers 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Feathers是Feathers开源的一个轻量级的 Web 框架。用于使用 TypeScript 或 JavaScript 创建 API 和实时应用程序。 Feathers 5.0.0版本至5.0.42之前版本存在安全漏洞，该漏洞源于传输层未对Socket.IO客户端发送的id参数进行类型检查，当使用MongoDB适配器时可能导致查询操作符注入。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
@feathersjsmongodb >= 5.0.0, < 5.0.42 -

II. Public POCs for CVE-2026-29793

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III. Intelligence Information for CVE-2026-29793

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Vendor Advisories for CVE-2026-29793 (1)

IV. Related Vulnerabilities

Same weakness: CWE-943

V. Comments for CVE-2026-29793

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