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CVE PROGRAM SOURCE RECORD7.5 High

CVE-2026-23842

ChatterBot has Denial of Service via Database Connection Pool Exhaustion

Description

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 products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

gunthercox ChatterBot

  • < 1.2.11affected

References