GCVE-110-OSM-2026-5350

Advisory PublishedCVSS 5.4/10

Vulnetix · Advisory published June 4, 2026

Bug bounty dependency confusion attempt. Package exfiltrates basic system information (hostname, IP, DNS) to security research infrastructure. Behaviors: data exfiltration, install-time execution. Entrypoint: postinstall.js (install-hook: node postinstall.js) Payload: postinstall.js Key findings: - OAST/Interactsh Exfiltration in postinstall.js: "webhook.site" - Install Hook Executes Local JS File in package.json: ""postinstall": "node postinstall.js"" - System Information Exfiltration in postinstall.js: "JSON.stringify({ hostname: os.hostname(), username: os.userInfo().username, ..." - Platform Detection with Data Collection in postinstall.js: "JSON.stringify({ hostname: os.hostname(), username: os" - Publisher Has Other Malicious Packages IOCs: - payloadFileHash: 89b364165ce6e29f437203c21c19643d6f7193909d588a5859d341adb53bdf8c

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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	@catamania/front-components	all (affected)	—

References

Malicious npm package: @catamania/front-components

advisory

vendor

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