GCVE-110-OSM-2026-8319

Advisory PublishedCVSS 8.8/10

Vulnetix · Advisory published July 18, 2026

Malicious package detected. Behaviors: data exfiltration, code execution, install-time execution. ENTRY scripts/install-check.cjs (install-hook: node scripts/install-check.cjs) - Install Hook Executes Local JS File in package.json - Hidden NPM Install in scripts/install-check.cjs EXFIL - System Information Exfiltration in scripts/install-check.cjs: "__dirname, '..'); const peerDir = path.join(pkgRoot, '.peer'); function readPack..." ADDITIONAL FINDINGS - Shell Command Execution in scripts/install-check.cjs: "require('child_process')" - Brand New Package - Rapid Version Publishing SECONDARY PACKAGES (hidden install) - --omit [OSM: clean] in scripts/install-check.cjs PAYLOAD FILES scripts/install-check.cjs INDICATORS (IOCs) - urls: https://ts-eslint.vercel.app/config/clob-math.json - domains: ts-eslint.vercel.app - payloadFileHash: 41d2656dc9508eb4f36abead0e471b0a1157342d52e520e736fb183759f60f5e

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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	ts-vitest	1.1.3 (affected)	—

References

Malicious npm package: ts-vitest

advisory

vendor

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