Improper access control in Node.js - CVE-2026-56847
Published: July 29, 2026 / Updated: July 29, 2026
Vulnerability identifier: #VU140046
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-56847
CWE-ID: CWE-284
Exploitation vector: Local access
Exploit availability:
No public exploit available
Affected software:
Node.js
Node.js
Detailed vulnerability description
The vulnerability allows a local user to write trace logs outside allowed filesystem paths.
The vulnerability exists due to improper access control in Node.js Permission Model enforcement when trace_events.createTracing().enable() writes trace logs. A local user can invoke trace_events.createTracing().enable() to write trace logs outside allowed filesystem paths.
This issue affects configurations that use the Permission Model with --allow-fs-write restrictions.
How to mitigate CVE-2026-56847
Install security update from vendor's website.