CVE-2026-58198

ChatterBot: Symlink-Following Arbitrary Write via UbuntuCorpusTrainer

State: Published
Severity: 5.5 Medium
Published: Jul 9, 2026
Updated: Jul 9, 2026
Reserved: Jun 29, 2026

Description

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 (~/ubuntu_data/ubuntu_dialogs) with a check-then-create pattern followed by tar.extractall(path=self.data_path), allowing a local attacker who pre-plants a symlink at the predictable path to cause archive contents to be written through the symlink to an attacker-chosen directory. This issue is fixed in version 1.2.14.

Scores

CVSS	Score	Vector	Source
3.1	5.5 Medium	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N	GitHub_M

Weaknesses

CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition
CWE-59 Improper Link Resolution Before File Access ('Link Following')

Affected Products

Product	Versions
ChatterBotgunthercox	< 1.2.14Affected

References

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