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SharedRoot: Escaping the Claude Cowork sandbox

SharedRoot: Escaping the Claude Cowork sandbox — Accomplish Blog

AI-collected research leads through 1 October 2026, including a bounded September review of selected social and community sources. Unranked, incomplete, not community-vetted, and subject to change.

A Claude Cowork session combines unprivileged user namespaces, netlink module autoloading and a public kernel page-cache write with an unhardened root broker. Guest root can then reach the Mac host filesystem because the entire host root is mounted read-write inside the VM.

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SharedRoot: Escaping the Claude Cowork sandbox — Accomplish Blog
Researcher
Oren Yomtov
Published by
Accomplish
Date
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This page is the archive's own catalogue record. The research is the work of Oren Yomtov, first published at the original source. Preserved copies are kept so the citation survives its host; this one was last captured on .