Uncaught exception in engine.io
CVE-2023-31125

6.5MEDIUM

Key Information:

Vendor: Socketio
Status: Engine.io
Vendor: CVE Published:; 8 May 2023

What is CVE-2023-31125?

Engine.IO is the implementation of transport-based cross-browser/cross-device bi-directional communication layer for Socket.IO. An uncaught exception vulnerability was introduced in version 5.1.0 and included in version 4.1.0 of the socket.io parent package. Older versions are not impacted. A specially crafted HTTP request can trigger an uncaught exception on the Engine.IO server, thus killing the Node.js process. This impacts all the users of the engine.io package, including those who use depending packages like socket.io. This issue was fixed in version 6.4.2 of Engine.IO. There is no known workaround except upgrading to a safe version.

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