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CVE-2024-37890 is a denial-of-service vulnerability in the ws WebSocket client and server library for Node.js. In affected releases, processing an HTTP request whose header count exceeds the configured server.maxHeadersCount threshold can crash a ws server. The issue is fixed in ws 8.17.1 and was backported to versions 7.5.10, 6.2.3, and 5.2.4 in their respective maintenance branches.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
5 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A denial-of-service vulnerability in nodejs-ws when handling requests containing many HTTP headers.
A denial-of-service flaw in nodejs-ws triggered by handling a request containing many HTTP headers.
A denial-of-service vulnerability in nodejs-ws triggered by requests containing many HTTP headers.
A nodejs-ws denial-of-service vulnerability triggered by a request containing many HTTP headers.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.