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TI-2026-41913 Aliases CVE-2026-58198

ChatterBot: Symlink-Following Arbitrary Write via UbuntuCorpusTrainer

Priority MEDIUM 58CWE-367Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-59 and the CVSS impact.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00139 3rd percentileScored 2026-11-07
Fix Fixed ChatterBot (gunthercox): 1.2.14

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
gunthercoxChatterBotbefore 1.2.141.2.14Patch availableCNA
  • ChatterBot Vendorgunthercox Affected before 1.2.14 Fixed in 1.2.14 Patch available CNA

Remediation

  • Fix · CNA ChatterBot (gunthercox) Fixed in 1.2.14

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-58198

References

Other 4

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences