GCVE-110-OSM-2026-841

Advisory PublishedCVSS 8.8/10

Vulnetix · Advisory published March 12, 2026

Malicious VS Code extension published as part of the Glassworm campaign. Contains invisible Unicode characters that decode into executable payloads. Part of a coordinated multi-ecosystem attack spanning GitHub, npm, and the VS Code Marketplace. Malicious payload uses invisible Unicode injection technique. Unicode range: 0xFE00-0xFE0F (Variation Selectors) and 0xE0100-0xE01EF (Variation Selectors Supplement) Behavior: Hidden characters decode into executable payload via eval(). Designed for credential and token theft via Solana blockchain-based second-stage delivery.

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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	quartz.quartz-markdown-editor	0.3.0 (affected)	—

References

Malicious vscode package: quartz.quartz-markdown-editor

advisory

vendor

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