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CVE-2024-37890— Denial of service when handling a request with many HTTP headers in ws

Quick assessment

Affected
websockets ws
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

ws是WebSockets开源的一个 Node.js WebSocket 库。 ws存在安全漏洞，该漏洞源于如果请求的标头数量超过阈值，可能导致服务器崩溃。

CVSS 7.5 · High EPSS 1.35% · P70

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking
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I. Basic Information for CVE-2024-37890

Vulnerability Information
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Vulnerability Title
Denial of service when handling a request with many HTTP headers in ws
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
空指针解引用
Source: CVE Program / CVE List V5
Vulnerability Title
ws 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ws是WebSockets开源的一个 Node.js WebSocket 库。 ws存在安全漏洞，该漏洞源于如果请求的标头数量超过阈值，可能导致服务器崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
websockets ws >= 2.1.0, < 5.2.4 -

II. Public POCs for CVE-2024-37890

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 6411 chars
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III. Intelligence Information for CVE-2024-37890

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Patches & Fixes for CVE-2024-37890 (3)

Vendor Advisories for CVE-2024-37890 (1)

Other References for CVE-2024-37890 (2)

IV. Related Vulnerabilities

Same product: ws
Same vendor: websockets
Same weakness: CWE-476

V. Comments for CVE-2024-37890

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