GCVE-110-OSM-2026-9677

Advisory PublishedCVSS 8.8/10

Vulnetix · Advisory published August 4, 2026

Compromised npm package infected via worm propagation in the Shai-Hulud/ChainDrop supply chain attack (Aug 4, 2026). Malicious versions contain obfuscated preinstall scripts (setup.mjs, math_init.js) that download the Bun runtime and execute a credential-harvesting payload targeting npm tokens, GitHub tokens, AWS credentials, Kubernetes secrets, Vault tokens, Stripe keys, Slack tokens, SSH keys, and sensitive files. Exfiltrates encrypted data via Ethereum dead-drop C2. Malicious payload found in: setup.mjs, math_init.js\nTrigger: preinstall script in package.json\nBehavior: Downloads Bun runtime, executes obfuscated infostealer payload targeting npm/GitHub/AWS/K8s/Vault/Stripe/Slack credentials and sensitive files. Exfiltrates via Ethereum dead-drop C2. Self-propagating worm infects other maintainers packages.\nCompromised versions: 6.6.1, 6.6.2, 6.6.3, 6.6.4, 6.6.5

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Weaknesses (CWE)

CWE-506Embedded Malicious Code

Risk Scores

CVSS 3.1

8.8/10

High · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected Products

Vendor	Product	Versions	Platforms
unknown	@servicetitan/testing-library	6.6.1, 6.6.2, 6.6.3, 6.6.4, 6.6.5, 6.6.6, 6.6.7 (affected)	—

References

Malicious npm package: @servicetitan/testing-library

advisory

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