Improper access control in Node.js - CVE-2026-48936

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Main Vulnerability Database Vulnerabilities #VU135024

Improper access control in Node.js - CVE-2026-48936

Published: June 22, 2026


Vulnerability identifier: #VU135024
CSH Severity: Low
CVSS v4: 4.8 [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]
CVE-ID: CVE-2026-48936
CWE-ID: CWE-284
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

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.


Affected software

Node.js
Fedora
nodejs22
nodejs24

How to mitigate CVE-2026-48936

Install security update from vendor's website.

Node.js - addressed in versions 22.23.0, 24.17.0, 26.3.1
nodejs22 - update to 22.23.1-2.fc44
nodejs24 - update to 24.18.0-1.fc44

External References

Related Security Bulletins