CVE-2026-23842

ChatterBot is a machine learning, conversational dialog engine for creating chat bots. ChatterBot versions up to 1.2.10 are vulnerable to a denial-of-service condition caused by improper database session and connection pool management. Concurrent invocations of the get_response() method can exhaust the underlying SQLAlchemy connection pool, resulting in persistent service unavailability and requiring a manual restart to recover. Version 1.2.11 fixes the issue.

• CWE-400

• https://github.com/gunthercox/ChatterBot/commit/de89fe648139f8eeacc998ad4524fab291a378cfPatch
• https://github.com/gunthercox/ChatterBot/pull/2432Issue Tracking
• https://github.com/gunthercox/ChatterBot/releases/tag/1.2.11Product, Release Notes
• https://github.com/gunthercox/ChatterBot/security/advisories/GHSA-v4w8-49pv-mf72Exploit, Vendor Advisory
• https://github.com/user-attachments/assets/4ee845c4-b847-4854-84ec-4b2fb2f7090fExploit

Published

Jan 19, 2026

Last Modified

Jun 17, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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