CVE-2026-23842: ChatterBot is a machine learning, conversational dialog engine for creating chat bots

Q: How do I fix CVE-2026-23842?

chatterbot: upgrade to 1.2.11. Exact commands for each OS are on this page.

Q: Is CVE-2026-23842 being exploited?

CVE-2026-23842 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-23842 affect?

CVE-2026-23842 affects chatterbot. Severity is high (CVSS 7.5). 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. Conc

Q: How urgent is CVE-2026-23842?

Priority 48/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

HIGH 7.5REMOTEUPGRADE

CVE-2026-23842 is a high-severity flaw (CVSS 7.5) affecting chatterbot. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 fi

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.5% (top 55%)
CISA exploited list	No
Weakness	CWE-400
Published	2026-01-19
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: chatterbot

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-01-19 19:16 UTCPublished CVE record published
2026-06-17 10:22 UTCUpdated Record last modified

chatterbot chatterbot UPGRADE

Affected: < 1.2.11

Fixed in: 1.2.11

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy chatterbot || rpm -q chatterbot || chatterbot --version

2. UPGRADE to 1.2.11 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade chatterbot

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade chatterbot

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-23842?

chatterbot: upgrade to 1.2.11. Exact commands for each OS are on this page.

Is CVE-2026-23842 being exploited?

CVE-2026-23842 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-23842 affect?

CVE-2026-23842 affects chatterbot. Severity is high (CVSS 7.5). 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. Conc

How urgent is CVE-2026-23842?

Priority 48/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

References

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