GCVE-110-OSM-2026-2355

Advisory PublishedCVSS 5.4/10

Vulnetix · Advisory published April 15, 2026

Install-time preinstall hook exfiltrates host identity data (hostname, whoami, package marker) to attacker-controlled OAST endpoint via HTTP POST during npm install. The package defines a preinstall lifecycle command that pipes static and system-identifying values into curl POST requests to pdgwqqdybclsevjdjbibf963wplqs0ro2.oast.fun using query keys echo, hostname, and whoami. This executes automatically on install without user interaction.

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Weaknesses (CWE)

CWE-506Embedded Malicious Code

Risk Scores

CVSS 3.1

5.4/10

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

Affected Products

Vendor	Product	Versions	Platforms
unknown	@amsterdam-local/forms-component-library	1.1.0 (affected)	—

References

Malicious npm package: @amsterdam-local/forms-component-library

advisory

vendor

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