Feathers socket handler allows abusing implicit toString
Impact
Feathers socket handler did not catch invalid string conversion errors like:
const message = `${{ toString: '' }}`Causing the NodeJS process to crash when sending an unexpected Socket.io message like
socket.emit('find', { toString: '' })Patches
A fix has been released in
v5.0.8via #3241v4.5.18via #3242
Workarounds
Since it is in the core Socket handling code upgrading to the latest version is necessary.
References
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | @feathersjs/socketio | < 4.5.18, >= 5.0.0, < 5.0.8 | 4.5.18, 5.0.8 |
| npm package | @feathersjs/transport-commons | < 4.5.18, >= 5.0.0, < 5.0.8 | 4.5.18, 5.0.8 |
References
- https://github.com/feathersjs/feathers/security/advisories/GHSA-hhr9-rh25-hvf9
- https://nvd.nist.gov/vuln/detail/CVE-2023-37899
- https://github.com/feathersjs/feathers/pull/3241
- https://github.com/feathersjs/feathers/pull/3242
- https://github.com/feathersjs/feathers/commit/0b9a6b19b12ad05934e4c8bd9917448ed39d1ed8
- https://github.com/feathersjs/feathers/commit/c397ab3a0cd184044ae4f73540549b30a396821c
- https://github.com/feathersjs/feathers
- https://github.com/feathersjs/feathers/blob/crow/CHANGELOG.md#4518-2023-07-19
- https://github.com/feathersjs/feathers/blob/dove/CHANGELOG.md#508-2023-07-19
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H- Weakness (CWE)
CWE-754- Platform
- npm
- Package
@feathersjs/socketio, @feathersjs/transport-commons- Disclosed
- 20.07.2023
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-hhr9-rh25-hvf9 - CC BY 4.0
Vulnerability history: @feathersjs/socketio
All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.
This is the only known vulnerability of this package.
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