Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2025-55130

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
20/01/2026
Last modified:
03/02/2026

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.<br /> This vulnerability affects users of the permission model on Node.js v20, v22, v24, and v25.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N CVSS v3.1 Severity and Metrics:

Base Score: 9.10 CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): None

Base Score 3.x
9.10
Severity 3.x
CRITICAL

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:* 20.0.0 (including) 20.20.0 (excluding)
cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:* 22.0.0 (including) 22.22.0 (excluding)
cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:* 24.0.0 (including) 24.13.0 (excluding)
cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:* 25.0.0 (including) 25.3.0 (excluding)

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools