CVE-2024-37890

HighCVSS 7.5/10Last modified Jun 17, 2026

Description

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 (22c2876), ws@6.2.3 (eeb76d3), and ws@5.2.4 (4abd8f6). In vulnerable versions of ws, the issue can be mitigated in the following ways: 1. Reduce the maximum allowed length of the request headers using the --max-http-header-size=size and/or the maxHeaderSize options so that no more headers than the server.maxHeadersCount limit can be sent. 2. Set server.maxHeadersCount to 0 so that no limit is applied.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-476

Affected software

Vendor	Product	Versions
websockets	ws	>= 2.1.0, < 5.2.4; >= 6.0.0, < 6.2.3; >= 7.0.0, < 7.5.10; >= 8.0.0, < 8.17.1
websockets	ws	2.1.0
websockets	ws	< 5.2.4
websockets	ws	6.0.0
websockets	ws	< 6.2.3
websockets	ws	7.0.0
websockets	ws	< 7.5.10
websockets	ws	8.0.0
websockets	ws	< 8.17.1

References

Timeline

Published: Jun 17, 2024
Last modified: Jun 17, 2026
NVD status: Deferred

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