GCVE-110-OSM-2026-2543

Advisory PublishedCVSS 5.4/10

Vulnetix · Advisory published April 16, 2026

Bug bounty dependency confusion attempt. Package exfiltrates basic system information (hostname, IP, DNS) to security research infrastructure. Behaviors: data exfiltration, network activity, install-time execution. Payload: postinstall.js Key findings: - OAST/Interactsh Exfiltration in postinstall.js: "oastify.com" - Install Hook Executes Local JS File in package.json: ""postinstall": "node postinstall.js"" - Brand New Package - Very New NPM Publisher Account IOCs: - urls: https://wnnifnbg2vw9fxuzqp4gtr6l7cd51vpk.oastify.com/confuse-me - domains: wnnifnbg2vw9fxuzqp4gtr6l7cd51vpk.oastify.com - oastEndpoints: https://wnnifnbg2vw9fxuzqp4gtr6l7cd51vpk.oastify.com/confuse-me - payloadFileHash: 32d792958620f072f1c99005d7a2ec5f331f1e99c350d8851a1399311f4b228b

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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	@b2b-frontend/store	all (affected)	—

References

Malicious npm package: @b2b-frontend/store

advisory

vendor

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