gunthercox ChatterBot up to 1.2.13 ubuntu_dialogs UbuntuCorpusTrainer.extract symlink

Summaryinfo

A vulnerability categorized as problematic has been discovered in gunthercox ChatterBot up to 1.2.13. This affects the function UbuntuCorpusTrainer.extract of the file /ubuntu_data/ubuntu_dialogs. The manipulation results in symlink. This vulnerability is known as CVE-2026-58198. Attacking locally is a requirement. No exploit is available.

Detailsinfo

A vulnerability classified as problematic has been found in gunthercox ChatterBot up to 1.2.13. Affected is the function UbuntuCorpusTrainer.extract of the file /ubuntu_data/ubuntu_dialogs. The manipulation with an unknown input leads to a symlink vulnerability. CWE is classifying the issue as CWE-61. The product, when opening a file or directory, does not sufficiently account for when the file is a symbolic link that resolves to a target outside of the intended control sphere. This could allow an attacker to cause the product to operate on unauthorized files. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-58198 since 06/29/2026. The exploitability is told to be easy. The attack needs to be approached locally. There are known technical details, but no exploit is available.

Upgrading to version 1.2.14 eliminates this vulnerability.

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Productinfo

Type

• Chat Software

Vendor

• gunthercox

Name

• ChatterBot

Version

• 1.2.0
• 1.2.1
• 1.2.2
• 1.2.3
• 1.2.4
• 1.2.5
• 1.2.6
• 1.2.7
• 1.2.8
• 1.2.9
• 1.2.10
• 1.2.11
• 1.2.12
• 1.2.13

Website

• Product: https://github.com/gunthercox/ChatterBot/

CPE 2.3info

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