CVE-2023-30583: Node.js Node

High severity, CVSS 7.5. EPSS: 0.7% chance of exploitation in the next 30 days.

fs.openAsBlob() can bypass the experimental permission model when using the file system read restriction with the `--allow-fs-read` flag in Node.js 20. This flaw arises from a missing check in the `fs.openAsBlob()` API. Please note that at the time this CVE was issued, the permission model is an experimental feature of Node.js.

Affected products

• Node.js Node: from 4.0, before 5 (fixed in 5); from 5.0, before 6 (fixed in 6); from 6.0, before 7 (fixed in 7); from 7.0, before 8 (fixed in 8); from 8.0, before 9 (fixed in 9); from 9.0, before 10 (fixed in 10); …
• Node.js Node.js: from 20.0, before 20.3.1 (fixed in 20.3.1)

Published 2024-09-07. Last modified 2026-06-17.