🛡️ CVE-2026-29793 — feathers

🔴 CVSS 9.8 — Critical ✅ No Known Exploit CWE-943 NVD
9.8
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

Affected software

CVE-2026-29793 is recorded against 2 packages.

  • @feathersjs/mongodb
  • feathers (from 5.0.0 up to 5.0.42)

Timeline and source

Published on 10 March 2026 and last revised on 13 March 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

github.com (Web)
nvd.nist.gov (Advisory)
github.com (Package)

Details

Severity CRITICAL
CVSS Score 9.8
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE CWE-943
Public Exploit ✅ No
Source NVD
Published 2026-03-10
Updated 2026-08-12
Modified 2026-03-13
Fix URL N/A

Affected Packages

Software From version Fixed in
@feathersjs/mongodb — —
feathers 5.0.0 5.0.42

Exploit Protection

Are you running feathers?

CVE-2026-29793 carries CVSS 9.8 Critical rating. BotEraser checks your installation against this and other known CVE records, and blocks IPs associated with exploit activity.

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