Improper access control in Node.js - CVE-2026-48936
Published: June 22, 2026
Vulnerability identifier: #VU135024
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-48936
CWE-ID: CWE-284
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Node.js Foundation
Affected software:
Node.js
Node.js
Detailed vulnerability description
The vulnerability allows a local user to bypass network permission restrictions.
The vulnerability exists due to improper access control in the Permission API when starting a local server over a Unix domain socket without --allow-net permission. A local user can start a local server over a Unix domain socket to bypass network permission restrictions.
This issue is described as an incomplete fix for CVE-2026-21636.
How to mitigate CVE-2026-48936
Install security update from vendor's website.