GCVE-110-OSM-2026-13421

Advisory PublishedCVSS 8.8/10

Vulnetix · Advisory published September 25, 2026

This package pretends to be a tool to generate certificates, but Its advertised certificate-generation function covertly decodes JavaScript hidden inside a fake certificate, fetches Python code from a hard-coded IP address, and executes the response through a detached, hidden Python process. ENTRY index.js (main: index.js) OBFUSCATION - Dynamic Base64 Decoding in index.js: "Buffer.from(portion, 'base64')" - Decoded Base64 Content in sample/cert.pem (x19) - Strings Extracted from Deobfuscated Code in index.js ADDITIONAL FINDINGS - Very New NPM Publisher Account PAYLOAD FILES sample/cert.pem

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Weaknesses (CWE)

CWE-506Embedded Malicious Code

Risk Scores

CVSS 3.1

8.8/10

High · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected Products

Vendor	Product	Versions	Platforms
unknown	selfsigned-generator	all (affected)	—

References

Malicious npm package: selfsigned-generator

advisory

vendor

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