Websockets vulnerabilities
We track 3 vulnerabilities in Websockets products. 3 are rated high or critical, and none are known to be exploited. The most recent was published on June 17, 2026.
Latest Websockets vulnerabilities
- 7.5 High severity
ws: Uncontrolled Resource Consumption
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 ca
- 7.5 High severity
ws: Use of Uninitialized Resource
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.
- 7.5 High severity
ws: NULL Pointer Dereference
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 [email protected] (e55e510) and backported to [email protected] (2