chore(deps): update dependencies

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
eslint (source)	9.39.2 → 9.39.4
mocha (source)	11.7.5 → 11.7.6
ws	8.18.3 → 8.21.0

---

Release Notes

eslint/eslint (eslint)

v9.39.4

Compare Source

Bug Fixes

• f18f6c8 fix: update dependency minimatch to ^3.1.5 (#​20564) (Milos Djermanovic)
• a3c868f fix: update dependency @​eslint/eslintrc to ^3.3.4 (#​20554) (Milos Djermanovic)
• 234d005 fix: minimatch security vulnerability patch for v9.x (#​20549) (Andrej Beles)
• b1b37ee fix: update ajv to 6.14.0 to address security vulnerabilities (#​20538) (루밀LuMir)

Documentation

• 4675152 docs: add deprecation notice partial (#​20520) (Milos Djermanovic)

Chores

• b8b4eb1 chore: update dependencies for ESLint v9.39.4 (#​20596) (Francesco Trotta)
• 71b2f6b chore: package.json update for @​eslint/js release (Jenkins)
• 1d16c2f ci: pin Node.js 25.6.1 (#​20563) (Milos Djermanovic)

v9.39.3

Compare Source

Bug Fixes

• 791bf8d fix: restore TypeScript 4.0 compatibility in types (#​20504) (sethamus)

Chores

• 8594a43 chore: upgrade @​eslint/js@​9.39.3 (#​20529) (Milos Djermanovic)
• 9ceef92 chore: package.json update for @​eslint/js release (Jenkins)
• af498c6 chore: ignore /docs/v9.x in link checker (#​20453) (Milos Djermanovic)

mochajs/mocha (mocha)

v11.7.6

Compare Source

🩹 Fixes

• make describe().timeout() work (aafe6fd)
• test: replace wmic usage with native Windows API (#​5694) (73ebdfa)

🧹 Chores

• format all code (#​5629) (0696784)
• remove Netlify (#​5630) (8d01d33)

websockets/ws (ws)

v8.21.0

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Features

• Introduced the maxBufferedChunks and maxFragments options (2b2abd4).

Bug fixes

• Fixed a remote memory exhaustion DoS vulnerability (2b2abd4).

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.

v8.20.1

Compare Source

Bug fixes

• Fixed an uninitialized memory disclosure issue in websocket.close()
  (c0327ec).

Providing a TypedArray (e.g. Float32Array) as the reason argument for
websocket.close(), rather than the supported string or Buffer types, caused
uninitialized memory to be disclosed to the remote peer.

import { deepStrictEqual } from 'node:assert';
import { WebSocket, WebSocketServer } from 'ws';

const wss = new WebSocketServer(
  { port: 0, skipUTF8Validation: true },
  function () {
    const { port } = wss.address();
    const ws = new WebSocket(`ws://localhost:${port}`, {
      skipUTF8Validation: true
    });

    ws.on('close', function (code, reason) {
      deepStrictEqual(reason, Buffer.alloc(80));
    });
  }
);

wss.on('connection', function (ws) {
  ws.close(1000, new Float32Array(20));
});

The issue was privately reported by Nikita Skovoroda.

v8.20.0

Compare Source

Features

• Added exports for the PerMessageDeflate class and utilities for the
  Sec-WebSocket-Extensions and Sec-WebSocket-Protocol headers (d3503c1).

v8.19.0

Compare Source

Features

• Added the closeTimeout option (#​2308).

Bug fixes

• Handled a forthcoming breaking change in Node.js core (1998485).

---

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[sonarqubecloud]

Quality Gate passed

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0.0% Duplication on New Code

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Quality Gate passed

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[sonarqubecloud]

Quality Gate passed

Issues
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See analysis details on SonarQube Cloud

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud