ChatterBot: Symlink-Following Arbitrary Write via UbuntuCorpusTrainer — GHSA-WVRH-2F4M-924V

Summary

## Summary ChatterBot's `UbuntuCorpusTrainer.extract()` uses a predictable, home-rooted output directory (`~/ubuntu_data/ubuntu_dialogs`) with a check-then-create pattern (`if not os.path.exists: os.makedirs`) followed by `tar.extractall(path=self.data_path)`. A local attacker who pre-plants a symlink at the predictable path causes `os.path.exists()` to return True (following the symlink), skipping `makedirs`, and…

Product

pip: ChatterBot

What to do

General, cautious steps (verify details in the official source):

• Review exposure and plan remediation based on risk and environment.
• Identify affected product versions in your inventory and verify whether you are impacted.
• Apply vendor patches/updates or recommended mitigations as soon as available.
• Read the official advisory for exact affected versions and remediation steps.

Official advisory

• Read the official source

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