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CVE

CVE-2026-23842

ChatterBot has Denial of Service via Database Connection Pool Exhaustion
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CVE

CVE-2026-23842

ChatterBot has Denial of Service via Database Connection Pool Exhaustion

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.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
7.5
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
C
H
U
-

Related Resources

No items found.

References

https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23842.json, https://github.com/gunthercox/ChatterBot/commit/de89fe648139f8eeacc998ad4524fab291a378cf, https://github.com/gunthercox/ChatterBot/pull/2432, https://github.com/gunthercox/ChatterBot/releases/tag/1.2.11, https://github.com/gunthercox/ChatterBot/security/advisories/GHSA-v4w8-49pv-mf72, https://github.com/user-attachments/assets/4ee845c4-b847-4854-84ec-4b2fb2f7090f, https://nvd.nist.gov/vuln/detail/CVE-2026-23842

Severity

7.5

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
7.5
EPSS Probability
0.00032%
EPSS Percentile
0.08986%
Introduced Version
0
Fix Available
97181bde5546d112ef95eafda390aada68251d87

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