A flaw in Node.js’s Permissions model allows attackers to bypass `--allow-fs-read` and `--allow-fs-write` restrictions using crafted relative symlink paths. By chaining directories and symlinks, a script granted access only to the current directory can escape the allowed path and read sensitive files. This breaks the expected isolation guarantees and enables arbitrary file read/write, leading to potential system compromise. This vulnerability affects users of the permission model on Node.js v20, v22, v24, and v25.
History

Wed, 21 Jan 2026 21:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-289
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 21 Jan 2026 12:15:00 +0000

Type Values Removed Values Added
Title nodejs: Nodejs file permissions bypass
Weaknesses CWE-281
References
Metrics threat_severity

None

cvssV3_1

{'score': 7.1, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N'}

threat_severity

Important


Wed, 21 Jan 2026 11:30:00 +0000

Type Values Removed Values Added
First Time appeared Nodejs
Nodejs nodejs
Vendors & Products Nodejs
Nodejs nodejs

Tue, 20 Jan 2026 20:45:00 +0000

Type Values Removed Values Added
Description A flaw in Node.js’s Permissions model allows attackers to bypass `--allow-fs-read` and `--allow-fs-write` restrictions using crafted relative symlink paths. By chaining directories and symlinks, a script granted access only to the current directory can escape the allowed path and read sensitive files. This breaks the expected isolation guarantees and enables arbitrary file read/write, leading to potential system compromise. This vulnerability affects users of the permission model on Node.js v20, v22, v24, and v25.
References
Metrics cvssV3_0

{'score': 7.1, 'vector': 'CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: hackerone

Published:

Updated: 2026-01-22T04:55:29.170Z

Reserved: 2025-08-07T15:00:05.576Z

Link: CVE-2025-55130

cve-icon Vulnrichment

Updated: 2026-01-21T20:24:05.733Z

cve-icon NVD

Status : Received

Published: 2026-01-20T21:16:03.177

Modified: 2026-01-21T21:16:06.193

Link: CVE-2025-55130

cve-icon Redhat

Severity : Important

Publid Date: 2026-01-20T20:41:55Z

Links: CVE-2025-55130 - Bugzilla