CVE-2025-55130
Last modified
CVE-2025-55130 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. 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. EPSS estimates a 1.63% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Nodejs | Node.Js | >= 20.0.0, < 20.20.0 |
| Nodejs | Node.Js | >= 22.0.0, < 22.22.0 |
| Nodejs | Node.Js | >= 24.0.0, < 24.13.0 |
| Nodejs | Node.Js | >= 25.0.0, < 25.3.0 |
References
- https://nodejs.org/en/blog/vulnerability/december-2025-security-releasesRelease Notes, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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