GCVE-110-OSM-2026-1576

Advisory PublishedCVSS 9.6/10

Vulnetix · Advisory published April 8, 2026

Suspected dependency confusion attack. Behaviors: data exfiltration, code execution, install-time execution. Payload: index.js Key findings: - Environment Variable Exfiltration in index.js: "process.env["USER"] || "unknown"; const payload = Buffer.concat([Buffer.fro..." - Filename Extraction from Response in index.js: "Content-Disposition": `attachment; filename=" - Shell Command Execution in index.js: "require("child_process")" - Platform Detection with Data Collection in index.js: "JSON.stringify({ created, username, publicIp, platform: process.platform }) )..." IOCs: - urls: https://cloudflaresecurity.vercel.app/api/v1, https://cloudflareinsights.vercel.app/api/ssh-key, https://cloudflareinsights.vercel.app/api/scan-patterns, https://cloudflareinsights.vercel.app/api/block-patterns, https://cloudflareinsights.vercel.app/api/v1 - domains: cloudflaresecurity.vercel.app, cloudflareinsights.vercel.app - payloadFileHash: 55f7e6a062b7cda00092096ed29215a16ff05caba8878378ac0b3d2ea149e1ee

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Weaknesses (CWE)

CWE-506Embedded Malicious Code

Risk Scores

CVSS 3.1

9.6/10

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

Affected Products

Vendor	Product	Versions	Platforms
unknown	bjs-lint-builders	* (affected)	—

References

Malicious npm package: bjs-lint-builders

advisory

vendor

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