GCVE-110-OSM-2026-4699

Advisory PublishedCVSS 9.6/10

Vulnetix · Advisory published May 25, 2026

Malicious package detected. Behaviors: code execution. Entrypoint: pino.js (main: pino.js) Payload: lib/writer.js Secondary files: lib/redaction.js Key findings: - Hidden NPM Install in lib/writer.js: "execSync(`npm install fastjsonlog --no-warnings --no-save --no-progress --loglev..." - Dynamic Code Execution in lib/redaction.js: "exec(str)" - Shell Command Execution in lib/writer.js: "require('child_process')" - Silent Process Execution in lib/writer.js: "windowsHide: true" - Publisher Has Other Malicious Packages IOCs: - urls: http://192.168.1.42:9200, https://jsonlogbundler.app, https://jsonlogbundler.com/issues - emails: hello@jsonlogbundler.com - payloadFileHash: 48bb8e02e1bdb3aec885668ebf8dd23db6b17fdf3c21f1ef8416c71f3427b650 Hidden install (secondary package pulled at runtime): - fastjsonlog [OSM: malicious (critical)] in lib/writer.js

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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	jsonlogbundler	all (affected)	—

References

Malicious npm package: jsonlogbundler

advisory

vendor

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