CVE-2026-58198 ChatterBot: Symlink-Following Arbitrary Write via UbuntuCorpusTrainer

ChatterBot is a machine learning, conversational dialog engine for creating chat bots. Prior to 1.2.14, UbuntuCorpusTrainer.extract uses a predictable home-rooted output directory /ubuntudata/ubuntudialogs with a check-then-create pattern followed by tar.extractallpath=self.datapath, allowing a...