Vulnerability Report

CVE-2025-55130

Title: Path Traversal in Node.js Permissions Model

Other

Proof Of Concept

PoC Available for CVE-2025-55130

CWE Category NVD-CWE-noinfo

Published Date Jan 20, 2026

Modified Date Feb 03, 2026

Exploit Status Available

Score 9.1 CVSS v3.0

Exploit Probability (EPSS)

0.02%

Vulnerability Summary

CVE-2025-55130: 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.

Impacted Vendors

joyent 1

nodejs 1

Reference Links

https://nodejs.org/en/blog/vulnerability/december-2025-security-releases

CVSS v3.1

Source Entity [email protected]

Severity CRITICAL

9.1

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

CVSS v3.0

Source Entity [email protected]

Severity HIGH

7.1