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.
References
| Link | Resource |
|---|---|
| https://github.com/gunthercox/ChatterBot/commit/de89fe648139f8eeacc998ad4524fab291a378cf | Patch |
| https://github.com/gunthercox/ChatterBot/pull/2432 | Issue Tracking |
| https://github.com/gunthercox/ChatterBot/releases/tag/1.2.11 | Product Release Notes |
| https://github.com/gunthercox/ChatterBot/security/advisories/GHSA-v4w8-49pv-mf72 | Exploit Vendor Advisory |
| https://github.com/user-attachments/assets/4ee845c4-b847-4854-84ec-4b2fb2f7090f | Exploit |
Configurations
History
05 Feb 2026, 18:03
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Chatterbot chatterbot
Chatterbot |
|
| CPE | cpe:2.3:a:chatterbot:chatterbot:*:*:*:*:*:*:*:* | |
| References | () https://github.com/gunthercox/ChatterBot/commit/de89fe648139f8eeacc998ad4524fab291a378cf - Patch | |
| References | () https://github.com/gunthercox/ChatterBot/pull/2432 - Issue Tracking | |
| References | () https://github.com/gunthercox/ChatterBot/releases/tag/1.2.11 - Product, Release Notes | |
| References | () https://github.com/gunthercox/ChatterBot/security/advisories/GHSA-v4w8-49pv-mf72 - Exploit, Vendor Advisory | |
| References | () https://github.com/user-attachments/assets/4ee845c4-b847-4854-84ec-4b2fb2f7090f - Exploit |
19 Jan 2026, 19:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-01-19 19:16
Updated : 2026-02-05 18:03
NVD link : CVE-2026-23842
Mitre link : CVE-2026-23842
CVE.ORG link : CVE-2026-23842
JSON object : View
Products Affected
chatterbot
- chatterbot
CWE
CWE-400
Uncontrolled Resource Consumption
