CVE-2026-21715
Published:March 30, 2026
Updated:April 23, 2026
A flaw in Node.js Permission Model filesystem enforcement leaves "fs.realpathSync.native()" without the required read permission checks, while all comparable filesystem functions correctly enforce them. As a result, code running under "--permission" with restricted "--allow-fs-read" can still use "fs.realpathSync.native()" to check file existence, resolve symlink targets, and enumerate filesystem paths outside of permitted directories. This vulnerability affects 20.x, 22.x, 24.x, and 25.x processes using the Permission Model where "--allow-fs-read" is intentionally restricted.
Affected Packages
https://github.com/nodejs/node.git (GITHUB):
Affected version(s) >=v20.0.0 <v20.20.2Fix Suggestion:
Update to version v20.20.2https://github.com/nodejs/node.git (GITHUB):
Affected version(s) >=v24.0.0 <v24.14.1Fix Suggestion:
Update to version v24.14.1https://github.com/nodejs/node.git (GITHUB):
Affected version(s) >=v22.0.0 <v22.22.2Fix Suggestion:
Update to version v22.22.2https://github.com/nodejs/node.git (GITHUB):
Affected version(s) >=v25.0.0 <v25.8.2Fix Suggestion:
Update to version v25.8.2Additional Notes
The description of this vulnerability differs from MITRE.
Related Resources (1)
Do you need more information?
Contact UsCVSS v3
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Weakness Type (CWE)
Incorrect Permission Assignment for Critical Resource
EPSS
Base Score:
0.01
