Vulnerability library
Security checkFebruary 13, 2025

engine.io Uncaught Exception vulnerability

Understand the exposure, see the recommended fix, and check whether your own website has related weaknesses.

Medium severitynpmengine.io

Check your website

Find this and other vulnerabilities with a free scan.

Your scan runs on your computer. No account required.

Description

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 uses depending packages like socket.io.

Recommendation

Update the engine.io package to the latest compatible version. Followings are version details:

  • Affected version(s): >= 5.1.0, < 6.4.2
  • Patched version(s): 6.4.2

References

Could your website be exposed too?

SmartScanner can check your website for engine.io Uncaught Exception vulnerability and gives you actionable findings to investigate.

Start a free scan

Related Issues

You might also like:

How do hackers hack websites?

CSRF, XXE, and 12 Other Security Acronyms Explained

Exploiting Server Version Disclosure

See something that needs correcting? Let us knowUpdated February 13, 2025