Feathers socket handler allows abusing implicit toString (GHSA-hhr9-rh25-hvf9)

Description

Feathers socket handler did not catch invalid string conversion errors like:

Causing the NodeJS process to crash when sending an unexpected Socket.io message like

Recommendation

Update the @feathersjs/socketio package to the latest compatible version. Followings are version details:

• Affected version(s): **>= 5.0.0, <= 5.0.7

  <= 4.5.17**

• Patched version(s): **5.0.8

  4.5.18**

References

• GHSA-hhr9-rh25-hvf9
• CVE-2023-37899
• CWE-754
• CAPEC-310
• OWASP 2021-A6

Related Issues

• Feathers socket handler allows abusing implicit toString - CVE-2023-37899
• Vega Cross-Site Scripting (XSS) via expressions abusing toString calls in environments using the VEGA_DEBUG global varia (GHSA-7f2v-3qq3-vvjf) 2 - CVE-2025-59840
• Vega Cross-Site Scripting (XSS) via expressions abusing toString calls in environments using the VEGA_DEBUG global varia (GHSA-7f2v-3qq3-vvjf) - CVE-2025-59840
• Leaking sensitive user information still possible by filtering on private with prefix fields (GHSA-9xg4-3qfm-9w8f) - CVE-2023-34235

Tags:

npm

@feathersjs/socketio