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.
History

Wed, 11 Mar 2026 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 11 Mar 2026 12:00:00 +0000

Type Values Removed Values Added
First Time appeared Feathersjs
Feathersjs mongodb
Vendors & Products Feathersjs
Feathersjs mongodb

Tue, 10 Mar 2026 20:15:00 +0000

Type Values Removed Values Added
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.
Title NoSQL Injection via WebSocket id Parameter in MongoDB Adapter
Weaknesses CWE-943
References
Metrics cvssV4_0

{'score': 9.3, 'vector': '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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-03-10T20:08:52.109Z

Updated: 2026-03-11T14:09:19.913Z

Reserved: 2026-03-04T16:26:02.900Z

Link: CVE-2026-29793

cve-icon Vulnrichment

Updated: 2026-03-11T14:09:16.546Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-03-10T20:16:39.437

Modified: 2026-03-11T13:52:47.683

Link: CVE-2026-29793

cve-icon Redhat

No data.