CVE-2026-45736

EUVD-2026-30543
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
4.4 MEDIUM
NETWORK
HIGH
HIGH
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 37%
Affected Products (NVD)
VendorProductVersion
ws_projectws
8.0.0 ≤
𝑥
< 8.20.1
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
node-ws
bookworm
no-dsa
bullseye
postponed
forky
8.21.0+~cs14.19.1-1
fixed
sid
8.21.0+~cs14.19.1-1
fixed
trixie
no-dsa