CVE-2025-55130
Critical
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.
SeverityCritical
CVSS9.1
Exploit probability77. percentile1.7%
Product
Nodejs Node.js
PublishedJan 20, 2026
First seenJan 20, 2026
Weakness typeCWE-289CWE-289CWE-281CWE-281
How to fix
Update
- nodejs node.js20.20.0, 22.22.0, 24.13.0, 25.3.0 or later
Vendor advisories
- access.redhat.com/errata/RHSA-2026:2899
- access.redhat.com/errata/RHSA-2026:1843
- access.redhat.com/errata/RHSA-2026:1842
- access.redhat.com/errata/RHSA-2026:2422
- access.redhat.com/errata/RHSA-2026:2421
- access.redhat.com/errata/RHSA-2026:2420
- access.redhat.com/errata/RHSA-2026:2768
- access.redhat.com/errata/RHSA-2026:2767
- access.redhat.com/errata/RHSA-2026:2864
- access.redhat.com/errata/RHSA-2026:2783
- access.redhat.com/errata/RHSA-2026:2782
- access.redhat.com/errata/RHSA-2026:2781
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| nodejs node.js | 20.0.0 ≤ v < 20.20.0, 22.0.0 ≤ v < 22.22.0, 24.0.0 ≤ v < 24.13.0, 25.0.0 ≤ v < 25.3.0 | 20.20.0, 22.22.0, 24.13.0, 25.3.0 |
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