GCVE-110-OSM-2026-13096

Advisory PublishedCVSS 5.4/10

Vulnetix · Advisory published October 3, 2026

thunderboltRegistry.js lines 23-47 execute system commands (id, whoami, uname, ifconfig, cat /etc/hosts) and exfiltrate their output plus hostname/platform/PID to a hardcoded webhook.site URL (line 11, 15, 52), using a module.constructor require bypass (line 21). This is credential/host-info exfiltration to attacker infrastructure disguised as a CSS polyfill. ## Static analysis (vigil) Verdict `BLOCK`, score 27/100. Critical/high findings: - [critical] SC-026 Exfiltration/C2 infrastructure — `package/thunderboltRegistry.js:11` ## Package metadata - Publisher: unknown - Published: 2026-10-03T00:47:28.616Z - Install hooks: none found - SHA-256 (tarball): `57492c7b2603d04f4734b4a6677346e5866e1a31abd99a400e4c21f5dca85613` ## IOCs (defanged) - hxxps://webhook[.]site/0492a36c-4d7b-408a-865c-226db25987ba - webhook[.]site

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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	css-scroll-state-polyfill	1.0.0 (affected)	—

References

Malicious npm package: css-scroll-state-polyfill

advisory

vendor

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