Medium 5.5Published Jul 9, 2026

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

Updated under an hour ago (Oct 28, 2026, 8:50 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for gunthercox ChatterBot

Exploited in the last 30 days

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.

CVSS: 5.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Weakness (CWE): CWE-367, CWE-59
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Jul 9, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

gunthercox ChatterBot gunthercox:chatterbot (from the name)	before 1.2.14	CNA record

References

References

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

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.