CVE-2026-23842
High · 7.5CVSS
7.5
EPSS
0.5%
Published
Jan 19, 2026
CISA due date
—
The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| PyPI | chatterbot | 0 | 1.2.11 |
Related vulnerabilities
- GHSA-v4w8-49pv-mf72 ChatterBot Vulnerable to Denial of Service via Database Connection Pool Exhaustion Same vulnerability
- CVE-2026-113795 pypdf is a free and open-source pure-python PDF library. CWE-400
- CVE-2026-83400 Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise… CWE-400
- CVE-2026-112400 Pillow is a Python imaging library. CWE-400
- CVE-2026-111766 markdown-it is a Markdown parser. CWE-400
- CVE-2026-111759 markdown-it is a Markdown parser. CWE-400
- CVE-2025-52290 A NULL pointer dereference in the avpriv_h264_has_num_reorder_frames function of Ffmpeg… CWE-400
- CVE-2026-111066 AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. CWE-400