Claude Code source code suspected to have been leaked via NPM and has been uploaded to GitHub for backup

MeNews · 2026-04-02T12:04:25+00:00

Intern researcher at Web3 security company FuzzLand states that Anthropic's Claude Code source code appears to have been leaked through the NPM registry, with related files uploaded to GitHub, containing undisclosed feature hints and TODO comments. Anthropic has not responded to this matter yet.

MeNews

2026-04-02 12:04:25

Abstract generation in progress

ME News update. March 31 (UTC+8): Web3 security and analytics company FuzzLand intern researcher Chaofan Shou posted on X, claiming that the source code of Anthropic’s terminal development tool Claude Code appears to have been leaked through map files in its NPM registry, and that the related compressed package has been publicly downloaded. Users say that someone has backed up the complete code and uploaded it to a GitHub repository named “claude-code,” and shared that it contains many TODO comments and hints of unreleased features. There is currently no evidence showing that the repository or the compressed package has been authorized by Anthropic, and Anthropic has not yet publicly responded to the alleged leak. (Source: X platform)

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