● ToolsOct 30, 2026 · 15:068 sources
Cursor Says Up to 5,000 Users Affected by Modified Claude Code Extension
From huggingnews.com
AI;DR
Cursor reported a security breach involving a malicious, modified version of the Claude Code VS Code extension distributed through its IDE marketplace, affecting up to 5,000 users. The company temporarily disabled the marketplace, clarified the corrupted software was not developed by Anthropic, and advised users to update to version 2.1.314 of the extension.
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- SUPPORT@mntruell“do not believe the official Claude Code VS Code extension was compromised”x.com
- SUPPORT@_calumhall“threat actors not fully understanding or testing their macOS malware seems to have bailed the industry out”x.com
- SUPPORT@artemr“If you're using VSCode @code, Cursor @cursor_ai, or any other IDE built on VSCode, I would immediately enable extensions.installCooldownHours”x.com
- DISCUSSIONdsr_news.ycombinator.com