Malicious code in babel-preset-lib-client (npm)
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (4274de0136aa69f8b0f4eba03412c7809a1b8c2446bb3ed7f6de1333475aa4c4) index.js, the package main, runs a load-time IIFE that collects OS platform and architecture, hostname, username, private and public IP (via https://api.ipify.org), current working directory, the full output of `printenv` (base64-encoded), and the base64-encoded output of `tree../`, then POSTs the aggregated payload to a hardcoded Discord webhook at https://discord.com/api/webhooks/1524917003394089029/. The package name mimics the babel-preset naming convention but the code implements no Babel functionality; author, description, and keywords are empty. Any consumer that installs and requires this package leaks its full process environment (typically including NPM_TOKEN, AWS_*, GITHUB_TOKEN, and other CI/developer secrets) plus a listing of the parent directory to the attacker-controlled Discord channel. ## Source: ghsa-malware (fea0fc558d775f5f0b5312b5d3f5ead65a9b5963916fc1c4193b84fc66f3f7d9) Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.
AI Analysis
Technical Summary
The malicious npm package babel-preset-lib-client (versions 4.9.9, 4.9.10, and 4.9.11) executes a load-time Immediately Invoked Function Expression (IIFE) that gathers extensive system and environment information, including sensitive environment variables and directory listings. This aggregated data is exfiltrated via an HTTP POST request to a hardcoded Discord webhook URL. The package falsely presents itself as a Babel preset but contains no Babel-related functionality, indicating its sole purpose is data theft. This behavior exposes any consuming environment to significant information disclosure risks.
Potential Impact
Sensitive environment variables and system information are leaked to an attacker-controlled endpoint, potentially exposing credentials such as NPM_TOKEN, AWS keys, GitHub tokens, and other secrets used in continuous integration or development environments. This can lead to unauthorized access, privilege escalation, and compromise of related infrastructure or services.
Mitigation Recommendations
No official patch or remediation is currently documented. Users should immediately remove and avoid installing or requiring the babel-preset-lib-client package versions 4.9.9, 4.9.10, and 4.9.11. Review and revoke any potentially exposed secrets and rotate credentials that may have been compromised. Monitor for any unauthorized access resulting from leaked credentials. Check vendor advisories or trusted sources for updates or official fixes.
Malicious code in babel-preset-lib-client (npm)
Description
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (4274de0136aa69f8b0f4eba03412c7809a1b8c2446bb3ed7f6de1333475aa4c4) index.js, the package main, runs a load-time IIFE that collects OS platform and architecture, hostname, username, private and public IP (via https://api.ipify.org), current working directory, the full output of `printenv` (base64-encoded), and the base64-encoded output of `tree../`, then POSTs the aggregated payload to a hardcoded Discord webhook at https://discord.com/api/webhooks/1524917003394089029/. The package name mimics the babel-preset naming convention but the code implements no Babel functionality; author, description, and keywords are empty. Any consumer that installs and requires this package leaks its full process environment (typically including NPM_TOKEN, AWS_*, GITHUB_TOKEN, and other CI/developer secrets) plus a listing of the parent directory to the attacker-controlled Discord channel. ## Source: ghsa-malware (fea0fc558d775f5f0b5312b5d3f5ead65a9b5963916fc1c4193b84fc66f3f7d9) Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.
Affected software
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The malicious npm package babel-preset-lib-client (versions 4.9.9, 4.9.10, and 4.9.11) executes a load-time Immediately Invoked Function Expression (IIFE) that gathers extensive system and environment information, including sensitive environment variables and directory listings. This aggregated data is exfiltrated via an HTTP POST request to a hardcoded Discord webhook URL. The package falsely presents itself as a Babel preset but contains no Babel-related functionality, indicating its sole purpose is data theft. This behavior exposes any consuming environment to significant information disclosure risks.
Potential Impact
Sensitive environment variables and system information are leaked to an attacker-controlled endpoint, potentially exposing credentials such as NPM_TOKEN, AWS keys, GitHub tokens, and other secrets used in continuous integration or development environments. This can lead to unauthorized access, privilege escalation, and compromise of related infrastructure or services.
Mitigation Recommendations
No official patch or remediation is currently documented. Users should immediately remove and avoid installing or requiring the babel-preset-lib-client package versions 4.9.9, 4.9.10, and 4.9.11. Review and revoke any potentially exposed secrets and rotate credentials that may have been compromised. Monitor for any unauthorized access resulting from leaked credentials. Check vendor advisories or trusted sources for updates or official fixes.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- MAL-2026-10214
- Osv Schema Version
- 1.7.4
- Aliases
- []
- Ecosystems
- ["npm"]
- Database Specific Severity
- null
- Cvss Version
- null
Threat ID: 6a54ae0668715ace438f82dd
Added to database: 07/13/2026, 09:21:10 UTC
Last enriched: 07/13/2026, 09:57:02 UTC
Last updated: 07/25/2026, 02:29:44 UTC
Views: 69
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