Malicious version of Anthropic.claude-code 2.1.313 appears in the Cursor plugin marketplace; official security advisory released
Cursor discovered a maliciously tampered version of Anthropic.claude-code 2.1.313 in the VS Code extension marketplace. This version was not developed by Anthropic and affects at most 5,000 users. The malicious code collects host and user information, attempts to write the attacker's SSH public key and establish a reverse SSH tunnel, but due to permission restrictions this step fails on most macOS and Windows hosts. Cursor has removed the version, rebuilt the marketplace and shut down the attacker's server, and also provided a command to detect the svc-telemetry public key along with cleanup scripts for macOS and Windows.
Cursor discovered a maliciously tampered version of Anthropic.claude-code 2.1.313 in the VS Code extension marketplace. This version was not developed by Anthropic and affects at most 5,000 users. The malicious code collects host and user information, attempts to write the attacker's SSH public key and establish a reverse SSH tunnel, but due to permission restrictions this step fails on most macOS and Windows hosts. Cursor has removed the version, rebuilt the marketplace and shut down the attack
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