CVE-2026-45736Medium· 4.4▾ TwilightPoC availablews 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 i…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 24.2 · likelihood 0.1 · exploitation 12
A public proof-of-concept already exists for this vulnerability — see Exploit availability below.
Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Jul 30.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.7%
Last analysed / modified upstream
Exploit / PoC code exists
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.
ws >= 8.0.0, < 8.20.1Upgrade past the affected range:
ws 8.20.1Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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