AIKIDO-2026-117747
huggingface-hub is vulnerable to Path Traversal
53
Medium Risk
This Affects:
huggingface-hubTL;DR
HfFileSystem.get() writes files to local paths derived from server side filenames during recursive downloads without validating them. A remote filename such as folder/..\..\outside.txt escapes the destination directory on Windows and writes outside it. The same _validate_relative_filename check already guarded hf_hub_download, snapshot_download, and bucket sync, but HfFileSystem.get() skipped it. The fix validates the resolved relative filename and rejects unsafe paths before any local filesystem access.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and you use HfFileSystem.get() on Windows to download files whose server side names are externally controlled.
Background info
huggingface-hub is vulnerable to Path Traversal in versions 0.14.0 - 1.30.0.
How to fix this
Upgrade the huggingface-hub library to the patch version.
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