socket.io

4.8.4 · 25 Sep 2026MIT16.6M / weekRepository Homepage npm Atom feed

Same major only

1 release in betweenevery note read

Other targets from 4.0.1Newest 4.x, Latest4.8.4 Clears its advisory4.6.2

0
changes to make: 0
advisories fixed: 0
new: 2
fixes

Security

1 advisory still affects 4.0.2

socket.io has an unhandled 'error' eventmoderate · GHSA-25hc-qcg6-38wj

Upgrading to 4.6.2 clears it.

Release by release

4.0.2
6 May 20212 fixes
- fixed
  typings: make "engine" attribute public
- fixed
  Properly export the Socket class

Upgrade to 4.0.2

npm install socket.io@4.0.2

What 4.0.2 needs

Reading 4.0.2's manifest…

Check against your package.json

Which of your other dependencies stand in the way of 4.0.2. Read once, not stored.

After upgrading

Run the type checker, the linter and the tests.
Build, and look for new deprecation warnings.
Update peer dependencies the new version asks for.
1 advisory still affects 4.0.2.