CVE-2023-30583

nodejs: fs.openAsBlob bypass in experimental permission model

Published Sep 7, 2024 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2023-34964 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.
History
Type Values Removed Values Added
Metrics epss

{'score': 0.0001}

epss

{'score': 0.00013}

Type Values Removed Values Added
First Time appeared Nodejs
Nodejs nodejs
Weaknesses CWE-284
CPEs cpe:2.3:a:nodejs:nodejs:*:*:*:*:*:*:*:*
Vendors & Products Nodejs
Nodejs nodejs
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}

Type Values Removed Values Added
Description A vulnerability has been identified in Node.js version 20, where 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. 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.
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
hackerone
Published
Updated
Apr 30, 2025, 10:24 PM
Reserved
Apr 13, 2023, 1:00 AM
Status
Deferred
Published
Sep 7, 2024, 4:15 PM
Modified
Jun 17, 2026, 5:55 AM
Severity
Moderate
Public date
Jun 20, 2023, 12:00 AM