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NanoClaw: path traversal outside the sandbox

Two filename-validation gaps in host-side attachment handling: an inbound write and an outbound read. The public writeup links both maintainer fixes.

Open the original ↗Original cover artwork for Secure by Design, Broken by a Filename

Two host-side file boundaries

The investigation covers unsafe filename handling when receiving attachments and sending files back to a chat. These operations ran in the host process, outside the agent’s container.

The public article explains the different prerequisites for each path and the maintainer’s response. These are fixed findings; this page makes no claim about current versions.

Related work.