CVE-2026-45736

HIGH EPSS 37.4%
Published May 15, 20261mo ago · Modified Jun 17, 20262w ago
7.5 CVSS 3.1
High
Find Similar
Published May 15, 2026 1mo ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
7.5
Exploitability
3.9
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity None
Availability None

Threat Intelligence

EPSS Exploit Probability
37.4% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-908

Affected Products 1

VendorProductVersionRange
ws_projectws*≥8.0.0  –  <8.20.1

References 2

  • github.com https://github.com/websockets/ws/commit/c0327ec15a54d701eb6ccefaa8bef328cfc03086
    Patch
  • github.com https://github.com/websockets/ws/security/advisories/GHSA-58qx-3vcg-4xpx
    ExploitPatchVendor Advisory

Remediation

  • github.com https://github.com/websockets/ws/commit/c0327ec15a54d701eb6ccefaa8bef328cfc03086
    Patch
  • github.com https://github.com/websockets/ws/security/advisories/GHSA-58qx-3vcg-4xpx
    ExploitPatchVendor Advisory