CVE-2026-106073
Published:October 23, 2026
Updated:October 23, 2026
A flaw in Node.js Permission Model filesystem enforcement leaves "fs.realpathSync()" without the required read permission checks. This is an incomplete fix of CVE-2026-21715, which only covered "fs.realpathSync.native()".
As a result, code running under "--permission" with restricted "--allow-fs-read" can still use "fs.realpathSync()" to check file existence, resolve symlink targets, and enumerate filesystem paths outside of permitted directories.
This vulnerability affects Node.js 26.x, 24.x, and 22.x.
Affected Packages
nodejs (CONDA):
Affected version(s) >=26.0.0 <26.12.1Fix Suggestion:
Update to version 26.12.1nodejs (CONDA):
Affected version(s) >=22.3.0 <22.23.4Fix Suggestion:
Update to version 22.23.4https://github.com/nodejs/node.git (GITHUB):
Affected version(s) >=v24.0.0 <v24.22.1Fix Suggestion:
Update to version v24.22.1https://github.com/nodejs/node.git (GITHUB):
Affected version(s) >=v26.0.0 <v26.12.1Fix Suggestion:
Update to version v26.12.1https://github.com/nodejs/node.git (GITHUB):
Affected version(s) >=v22.0.0 <v22.23.4Fix Suggestion:
Update to version v22.23.4Additional Notes
The description of this vulnerability differs from MITRE.
Related Resources (2)
Do you need more information?
Contact UsCVSS v4
Base Score:
4.8
Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
3.3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Weakness Type (CWE)
Improper Access Control