How severe is CVE-2022-21676?

This vulnerability has a severity rating of HIGH with a CVSS score of 7.5 out of 10.

What type of vulnerability is CVE-2022-21676?

This is classified as CWE-754, which is a common weakness in software security.

CVE-2022-21676 - HIGH Severity | CVSS 7.5

Vulnerability Description

Engine.IO is the implementation of transport-based cross-browser/cross-device bi-directional communication layer for Socket.IO. 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 starting from version `4.0.0`, including those who uses depending packages like `socket.io`. Versions prior to `4.0.0` are not impacted. A fix has been released for each major branch, namely `4.1.2` for the `4.x.x` branch, `5.2.1` for the `5.x.x` branch, and `6.1.1` for the `6.x.x` branch. There is no known workaround except upgrading to a safe version.

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