Affected versions of uws do not properly handle large websocket messages when permessage-deflate is enabled, which may result in a denial of service condition.
Full advisory text at GitHub advisory or NVD.
npm package report
Is uws safe?
uws (npm) has 1 known vulnerability, the worst rated HIGH. Upgrade to 0.10.9 or later to clear it. No malicious-package signal is recorded.
// reach
0 direct dependencies
none carry a known advisory
Create a free accountfor every dependency path, dependent and what to upgrade
// ai model usage
Tracked for PyPI packages. HuggingFace models declare Python dependencies, so npm packages are not covered.
cvss
7.5
high
severity band, no base score published
epss
1.3%
medium
chance of exploitation in 30 days, 71st percentile of all CVEs
xyz score
4.0
medium
CyberXYZ composite out of 10
fig. 01 — GHSA-hf5h-hh56-3vrg, the advisory selected below
// 1 advisories
Is uws safe to install?
CyberXYZ does not call a package safe in absolute terms. It records 1 known vulnerability for uws (npm), the worst rated HIGH, and no malicious-package signal. Whether it is acceptable depends on the version you run.
Does uws have known vulnerabilities?
Yes. CyberXYZ records 1 known vulnerability for uws (npm), the worst rated HIGH. They are GHSA-hf5h-hh56-3vrg.
Which version of uws should I use?
0.10.9 or later clears every advisory recorded for uws (npm). Check the release you pick before installing it.
How do I check uws before installing?
Search uws in CyberXYZ Check at https://cyberxyz.io/check?q=uws. The xyz Scanner checks a project's dependencies, and CyberXYZ Proxy checks each package as it is installed.
Checked 2026-11-14 at 10:15 UTC. The most recent advisory here was published 2020-09-01. Updated continuously from NVD, GHSA, OSV and CNA feeds.