CVE-2026-58198

MEDIUM 5.5

ChatterBot: Symlink-Following Arbitrary Write via UbuntuCorpusTrainer

CVSS Score

5.5

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-367 CWE-59
Vendor	gunthercox
Product	chatterbot
Published	Jul 9, 2026
Last Updated	Jul 9, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Affected Versions

gunthercox / ChatterBot

< 1.2.14

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/gunthercox/ChatterBot/security/advisories/GHSA-wvrh-2f4m-924v github.com: https://github.com/gunthercox/ChatterBot/pull/2445 github.com: https://github.com/gunthercox/ChatterBot/commit/82817b5c28bfd43e682b991bcc76e6f780726dbf github.com: https://github.com/gunthercox/ChatterBot/releases/tag/1.2.14