CVE•Published 2026-05-15•Modified 2026-07-30•0 articles on news•4 live references•NVD data

CVE-2026-45736Ws_project · Ws

Vulnerability data via NVD (ingested)

CVSS v3.1

4.4

MEDIUM

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N

EPSS percentile

Exploit Prediction Scoring System · top 49% of all CVEs

Weaknesses (CWE)

CWE-908Use of Uninitialized Resource CWE-824Access of Uninitialized Pointer

Description

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.

Timeline

Published 2026-05-15

Modified 2026-07-30

External references

NVD MITRE Exploit-DB VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-45736

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Ws Project Ws"

All exposed Ws Project Ws instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Ws"

HTTP body or banner mentions "Ws" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-45736