CVE-2026-45736: ws is an open source WebSocket client and server for Node.js. Prior to 8.20.1, the websocket.close() implementation is v…
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.
- Published by source
- 2026-05-15
- First seen by Reality Radar
- 2026-10-26
- Last verified
- 2026-10-26
Affected
- Manufacturer
- ws project
- Products
- ws
- Versions
- <8.20.1
- CPE
- cpe:2.3:a:ws_project:ws:*:*:*:*:*:node.js:*:*
Whether your exact unit is affected depends on the model, serial number and region in the official notice.
What the official notice says
Risk: CVSS 7.5
Is this affecting you?
Add what you own or use and Reality Radar will tell you when official changes match it — with evidence and next steps.
Sources
- NIST National Vulnerability Database Tier A · official published 2026-05-15
Evidence ledger
Every piece of evidence we store is appended to a public hash chain, so later edits are detectable. Anyone can re-verify it.
| Entry | Kind | Observed | Evidence hash | Entry hash |
|---|---|---|---|---|
| #1849 | new | 2026-10-26 | 6155020d8c87…91101f | b7995973fd99…a914eb |
Chain head: #1913 68d492d71c09…880c23