CVE-2024-22020
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedA security flaw in Node.js allows a bypass of network import restrictions. By embedding non-network imports in data URLs, an attacker can execute arbitrary code, compromising system security. Verified on various platforms, the vulnerability is mitigated by forbidding data URLs in network imports. Exploiting this flaw can violate network import security, posing a risk to developers and servers.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceThis Node.js vulnerability allows attackers to bypass network import restrictions by embedding non-network imports (such as local file imports) within data URLs. This enables arbitrary code execution by tricking the import mechanism into loading malicious code that would otherwise be blocked by network import policies.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Local
- Complexity
- High
- Privileges
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- Low
- Integrity
- High
- Availability
- High
CVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify Node.js versionRun `node --version` to get the installed Node.js versionAffected if Version is earlier than the patched version that forbids data URLs in network imports
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Confirm ES module usageCheck if the project has a package.json with `"type": "module"` or uses .mjs file extensionsAffected if Project uses ES modules (import/export syntax)
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Check for network import configurationLook for Node.js flags like `--experimental-network-imports` or network import policy settings in runtime configurationAffected if Network import restrictions or network imports are enabled
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Scan for data URL importsSearch codebase for import statements containing `data:` URLs, for example: `import x from 'data:...'` or dynamic imports like `import('data:...')`Affected if Any import statements use data URLs that could bypass network restrictions
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Review import policy settingsInspect any import-meta-resolve or import policy configuration files that define allowed import sourcesAffected if No policy exists or data: URLs are permitted as valid import sources
Environment is affected if running a Node.js version prior to the fix, using ES modules with network import restrictions, and any data: URL imports exist in the codebase that could have bypassed those restrictions.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataUpdate Node.js to the patched version that forbids data URLs in network imports, and review all import statements to ensure no legitimate use of data URL imports is broken.
- Consultation3.0 h
- Implementation4.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-22020 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2024-22020 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data