CVE-2023-37899

Summary

CVE-2023-37899 is a vulnerability affecting Feathersjs, a popular framework for building web APIs and real-time applications. The issue lies in the Feathers socket handler, which fails to identify and handle invalid string conversion errors. Specifically, an unexpected Socket.io message, such as `socket.emit('find', { toString: '' })`, can cause the NodeJS process to crash due to the erroneous `toString: ''` conversion. The vulnerability, which does not have a known workaround, has been resolved in Feathersjs versions 5.0.8 and 4.5.18. Users are strongly advised to upgrade to protect against potential crashes and potential subsequent security risks.

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