How severe is CVE-2026-23842?

CVE-2026-23842 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-23842 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (39th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-23842?

CVE-2026-23842 affects Chatterbot. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-23842?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-23842 have an EU (EUVD) identifier?

Yes. CVE-2026-23842 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-3299.

When was CVE-2026-23842 published?

CVE-2026-23842 was published on 2026-01-19 and last updated on 2026-06-17.

CVE-2026-23842

CVE-2026-23842 is a high-severity vulnerability in Chatterbot with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-400.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (39th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-3299
Weakness: CWE-400
Affected product: Chatterbot
Published: 2026-01-19
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-23842?: 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.
How severe is CVE-2026-23842?: CVE-2026-23842 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-23842 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (39th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-23842?: CVE-2026-23842 affects Chatterbot. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-23842?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-23842 have an EU (EUVD) identifier?: Yes. CVE-2026-23842 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-3299.
When was CVE-2026-23842 published?: CVE-2026-23842 was published on 2026-01-19 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:chatterbot:chatterbot:*:*:*:*:*:*:*:*

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