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AIHOT · Published on October 31, 2026 at 05:09

Anthropic's VS Code extension for Cursor had a backdoor implanted for nearly 12 hours, potentially affecting up to 5,000 users.

AI Brief

An official VS Code extension for the Cursor marketplace from Anthropic contained a backdoor; the malicious version 2.1.313 was distributed via an official account and could have impacted up to 5,000 users. Hours later, Anthropic released version 2.1.314 with a fix.

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