GCVE-110-OSM-2026-8856

Advisory PublishedCVSS 5.4/10

Vulnetix · Advisory published July 20, 2026

Bug bounty dependency confusion attempt. Package exfiltrates basic system information (hostname, IP, DNS) to security research infrastructure. Behaviors: data exfiltration, install-time execution. ENTRY - Postinstall Script in package.json: ""postinstall": "node -e \"" DESTINATION - custom-c2: https://webhook.site/4c1960ca-7c79-44b6-b785-2cc3a69dd06b/?dryrun=heckurman-e2e&ts= (primary, plaintext) in package.json EXFIL - OAST/Interactsh Exfiltration in package.json: "webhook.site" ADDITIONAL FINDINGS - Publisher Has Other Malicious Packages

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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	@heckurman/mse-dep-confusion-dryrun	all (affected)	—

References

Malicious npm package: @heckurman/mse-dep-confusion-dryrun

advisory

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