GCVE-110-OSM-2026-4143

Advisory PublishedCVSS 5.4/10

Vulnetix · Advisory published May 12, 2026

[osmalyze-auto] 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. [osmalyze-auto] Entrypoint: bugcrowd-dc-poc.js (install-hook: node ./bugcrowd-dc-poc.js) Exfil: https://prkzhjek14khipqij5m37xb78yep2gq5.oastify.com/poc (oast, recovery: plaintext in bugcrowd-dc-poc.js) Payload: bugcrowd-dc-poc.js Key findings: - OAST/Interactsh Exfiltration in bugcrowd-dc-poc.js: ".oast.fun" - Install Hook Executes Local JS File in package.json: ""preinstall": "node ./bugcrowd-dc-poc.js"" - Brand New Package IOCs: - urls: https://stg.ashcare.com/react/assets/*.js.map`.@the - domains: stg.ashcare.com, oast.fun, burpcollaborator.net - webhookServices: https://webhook.site/<uuid>, - oastEndpoints: https://prkzhjek14khipqij5m37xb78yep2gq5.oastify.com/poc - payloadFileHash: 7279cac5898b5dafa46761ba3702adf102609ebd77f77dc3181c3b5d750867c2

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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	ashcare-ui-ember	99.99.99 (affected), 99.99.99 (affected), 99.99.99 (affected), 99.99.99 (affected)	—

References

Malicious npm package: ashcare-ui-ember

advisory

vendor

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