GCVE-110-OSM-2026-14373

Advisory PublishedCVSS 8.8/10

Vulnetix · Advisory published October 31, 2026

Malicious package detected. Behaviors: data exfiltration, network activity, install-time execution. ENTRY - Preinstall Script in package.json: ""preinstall": "node -e \"" - Postinstall Script in package.json: ""postinstall": "node -e \"" DESTINATION - 3 exfil (custom-c2) (values recorded in verified_iocs) EXFIL - Data Encoding for Exfiltration in package.json: "encodeURIComponent(process.env.USER||process.env.USERNAME||'')+'&h='+encodeURICo..." - Suspicious Domain in package.json: "http://38.242.235.206" ADDITIONAL FINDINGS - Brand New Package - Very New NPM Publisher Account - Rapid Version Publishing

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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	ms-client-portal	all (affected)	—

References

Malicious npm package: ms-client-portal

advisory

vendor

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