CVE-2026-29793 Details
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.
A NoSQL injection vulnerability has been identified in FeathersJS versions 5.0.0 prior to 5.0.42. Socket.IO clients can send arbitrary JavaScript objects as the id argument to service methods such as get, patch, update, and remove. The transport layer does not validate this argument, allowing malicious objects to be injected. When the MongoDB adapter is used, these objects are processed by getObjectId() and directly incorporated into MongoDB queries as operators. For example, sending an object with the $ne operator set to null matches all documents in the collection.
Users can upgrade to FeathersJS version 5.0.42 or later to address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Mar 11, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/feathersjs/feathers/security/advisories/GHSA-p9xr-7p9p-gpqx | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-943 | Improper Neutralization of Special Elements in Data Query Logic | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| feathersjs feathers | >= 5.0.0, < 5.0.42 |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Mar 19, 2026 | Initial Analysis | [email protected] |
| Mar 10, 2026 | New CVE Received | [email protected] |