GCVE-110-OSM-2026-7636

Advisory PublishedCVSS 9.6/10

Vulnetix · Advisory published July 10, 2026

Malicious package detected. Behaviors: data exfiltration, code execution. ENTRY index.js (main: index.js) EXFIL - System Information Collection in index.js: "process.platform" ADDITIONAL FINDINGS - Stealth Background Process Spawning in index.js: "spawn(dest, [], { detached: true, stdio: 'ignore', ...(isWindows && { windowsHid..." - Download Execute Delete Pattern in index.js: "createWriteStream, mkdirSync, existsSync, chmodSync } = require('fs'); const { g..." - Shell Command Execution in index.js: "require('child_process')" - Silent Process Execution in index.js: "stdio: 'ignore'" - Detached Child Process Payload in index.js: "spawn(dest, [], { detached: true" - Stream Response to Execution in index.js: "createWriteStream, mkdirSync, existsSync, chmodSync } = require('fs'); const { g..." (+2 more) PAYLOAD FILES index.js INDICATORS (IOCs) - urls: https://www.jsdelivr.com - domains: www.jsdelivr.com - payloadFileHash: 4d92810e005718d52f876601c1910905092974ac2adb35f17ef23732915341f1

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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	tinymask-js	all (affected)	—

References

Malicious npm package: tinymask-js

advisory

vendor

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