{"id":1542492,"date":"2026-04-02T09:12:13","date_gmt":"2026-04-02T09:12:13","guid":{"rendered":"http:\/\/SrzUjDvvufeVcGY6Er4ZDW"},"modified":"2026-04-02T09:12:13","modified_gmt":"2026-04-02T09:12:13","slug":"512000-lines-of-claude-codes-own-cli-source-code-have-leaked-due-to-human-error-but-the-company-says-no-sensitive-customer-data-or-credentials-were-exposed","status":"publish","type":"post","link":"https:\/\/arcader.org\/news\/512000-lines-of-claude-codes-own-cli-source-code-have-leaked-due-to-human-error-but-the-company-says-no-sensitive-customer-data-or-credentials-were-exposed\/","title":{"rendered":"512,000 lines of Claude Code’s own CLI source code have leaked due to ‘human error’, but the company says ‘no sensitive customer data or credentials’ were exposed"},"content":{"rendered":"
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Claude Code has become one of the modern darlings of the vibe coding revolution, being a terminal-based coding assistant that’s been used for a raft of creative software projects, including a, err, game created by a dog<\/a>. <\/p>\n

Unfortunately for Anthropic, the company behind the AI coding whizz, the latest package also included a source map file\u2014allowing access to its own command line interface (CLI) source code.<\/p>\n

The leak was first spotted by security researcher Chaofan Shou<\/a>, and posted on X with a (now defunct) link to the files. According to Ars Technica<\/a>, the codebase was then transferred to a public GitHub repository, and has since been forked tens of thousands of times.<\/p>\n

Of course, it could be worse. The source code does not pertain to the models themselves, but instead the command line interface that interacts with them. <\/p>\n

However, reports indicate that the leak contains almost 2,000 TypeScript files and more than 512,000 lines of code, which means it’s primed to give AI coding enthusiasts an insight into how Claude Code operates.<\/p>\n

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