GCVE-110-OSM-2026-1348

Advisory PublishedCVSS 5.4/10

Vulnetix · Advisory published April 3, 2026

Bug bounty dependency confusion attempt. Package exfiltrates basic system information (hostname, IP, DNS) to security research infrastructure. Behaviors: data exfiltration, install-time execution. Payload: postinstall.js Key findings: - OAST/Interactsh Exfiltration in postinstall.js: "workers.dev" - POST Method Defined for Exfiltration in postinstall.js: "method: 'POST', headers: { 'Content-Type': 'text/plain', 'Content-Length': B..." IOCs: - domains: probe-worker.hugebigballs87.workers.dev - payloadFileHash: 6b428700f41aee6f17f11fd302f6ac43e5776dfad914ad7ae08d4d3e46634d0f

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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	serverless-env-helpers	all (affected)	—

References

Malicious npm package: serverless-env-helpers

advisory

vendor

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