CVE-2026-23842

Summary

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 Software

Weaknesses

• CWE-400: CWE-400: Uncontrolled Resource Consumption

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: yes
  • Technical Impact: partial

References

• https://github.com/gunthercox/ChatterBot/security/advisories/GHSA-v4w8-49pv-mf72
• https://github.com/gunthercox/ChatterBot/pull/2432
• https://github.com/gunthercox/ChatterBot/commit/de89fe648139f8eeacc998ad4524fab291a378cf
• https://github.com/gunthercox/ChatterBot/releases/tag/1.2.11
• https://github.com/user-attachments/assets/4ee845c4-b847-4854-84ec-4b2fb2f7090f

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