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Malware Campaign Targets Open VSX Extension with 5,066 Downloads

Malware Campaign Targets Open VSX Extension with 5,066 Downloads

First seen 30 Jan 2026, 19:15 UTC

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ThreatCluster AI
ThreatCluster March 12, 2026 at 13:27 UTC

A sophisticated malware campaign has compromised the Open VSX extension marketplace, affecting over 5,000 developer workstations. The malicious package masqueraded as a legitimate Angular Language Service extension, embedding encrypted malware that activates upon opening HTML or TypeScript files. The attack utilized typosquatting and steganography techniques to evade detection.

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