GCVE-110-OSM-2026-13609

Advisory PublishedCVSS 5.4/10

Vulnetix · Advisory published October 13, 2026

Bug bounty dependency confusion attempt. Package exfiltrates basic system information (hostname, IP, DNS) to security research infrastructure. Behaviors: data exfiltration, network activity, install-time execution. ENTRY beacon.js (install-hook: node beacon.js preinstall) - Install Hook Executes Local JS File in package.json - Postinstall Script in package.json DESTINATION - 5 exfil (custom-c2) (values recorded in verified_iocs) EXFIL - OAST/Interactsh Exfiltration in beacon.js: ".oast.fun" - Data Encoding for Exfiltration in beacon.js: "encodeURIComponent(TOKEN" - System Information Collection in beacon.js: "os.userInfo()" - DNS Lookup in beacon.js: "dns.lookup(" - Suspicious Domain in beacon.js: "oast.fun" PAYLOAD FILES beacon.js

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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	@flexmr/ui	all (affected)	—

References

Malicious npm package: @flexmr/ui

advisory

vendor

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