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Vendor

websockets

4 known vulnerabilities.

websockets at a glance

Last 12 months
2
Critical · all time
0
Exploited · all time
0
Public exploit · all time
0
New vulnerabilities per month · last 12 months
0 1 1 December 2025: 0 vulnerabilities Dec 2025 January 2026: 0 vulnerabilities February 2026: 0 vulnerabilities March 2026: 0 vulnerabilities Mar April 2026: 0 vulnerabilities May 2026: 1 vulnerability June 2026: 1 vulnerability Jun July 2026: 0 vulnerabilities August 2026: 0 vulnerabilities September 2026: 0 vulnerabilities Sep October 2026: 0 vulnerabilities November 2026: 0 vulnerabilities
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Products

ws 4
All Critical High Medium Low Exploited only Public exploit

4 results · Feed

  • High 7.5
    CVE-2026-48779

    ws: Memory exhaustion DoS from tiny fragments and data chunks

    ws is an open source WebSocket client and server for Node.js. All versions from 1.1.0 up to (but not including) 5.2.5, from 6.0.0 up to 6.2.4, from 7.0.0 up to 7.5.11, and from 8.0.0 up to 8.21.0 are affected by a memory exhaustion DoS vulnerability. A peer c…

    websockets ws ws node-ws Debian Ubuntu npm
  • Medium 4.4
    CVE-2026-45736

    ws: Uninitialized memory disclosure

    ws is an open source WebSocket client and server for Node.js. Prior to 8.20.1, the websocket.close() implementation is vulnerable to uninitialized memory disclosure when a TypedArray is passed as the reason argument. This vulnerability is fixed in 8.20.1.

    websockets ws ws node-ws Debian Ubuntu npm
  • High 7.5
    CVE-2024-37890

    Denial of service when handling a request with many HTTP headers in ws

    ws is an open source WebSocket client and server for Node.js. A request with a number of headers exceeding theserver.maxHeadersCount threshold could be used to crash a ws server. The vulnerability was fixed in ws@8.17.1 (e55e510) and backported to ws@7.5.10 (…

    websockets ws ws node-ws Debian Ubuntu npm
  • Medium 5.3
    CVE-2021-32640

    ReDoS in Sec-Websocket-Protocol header

    ws is an open source WebSocket client and server library for Node.js. A specially crafted value of the `Sec-Websocket-Protocol` header can be used to significantly slow down a ws server. The vulnerability has been fixed in ws@7.4.6 (https://github.com/websock…

    websockets ws ws node-ws Debian Ubuntu npm