FKIE_CVE-2026-23842
Vulnerability from fkie_nvd - Published: 2026-01-19 19:16 - Updated: 2026-06-17 10:22
Severity
Summary
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.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| chatterbot | chatterbot | * |
{
"affected": [
{
"affectedData": [
{
"product": "ChatterBot",
"vendor": "gunthercox",
"versions": [
{
"status": "affected",
"version": "\u003c 1.2.11"
}
]
}
],
"source": "security-advisories@github.com"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:chatterbot:chatterbot:*:*:*:*:*:*:*:*",
"matchCriteriaId": "4D8B9379-D459-4198-B388-2BCC2378AB98",
"versionEndExcluding": "1.2.11",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "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."
},
{
"lang": "es",
"value": "ChatterBot es un motor de di\u00e1logo conversacional de aprendizaje autom\u00e1tico para crear chatbots. Las versiones de ChatterBot hasta la 1.2.10 son vulnerables a una condici\u00f3n de denegaci\u00f3n de servicio causada por una gesti\u00f3n inadecuada de la sesi\u00f3n de base de datos y del pool de conexiones. Las invocaciones concurrentes del m\u00e9todo get_response() pueden agotar el pool de conexiones subyacente de SQLAlchemy, lo que resulta en una indisponibilidad persistente del servicio y requiere un reinicio manual para recuperarse. La versi\u00f3n 1.2.11 soluciona el problema."
}
],
"id": "CVE-2026-23842",
"lastModified": "2026-06-17T10:22:11.350",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 3.6,
"source": "security-advisories@github.com",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-23842",
"options": [
{
"exploitation": "none"
},
{
"automatable": "yes"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-01-20T20:04:06.342314Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-01-19T19:16:04.510",
"references": [
{
"source": "security-advisories@github.com",
"tags": [
"Patch"
],
"url": "https://github.com/gunthercox/ChatterBot/commit/de89fe648139f8eeacc998ad4524fab291a378cf"
},
{
"source": "security-advisories@github.com",
"tags": [
"Issue Tracking"
],
"url": "https://github.com/gunthercox/ChatterBot/pull/2432"
},
{
"source": "security-advisories@github.com",
"tags": [
"Product",
"Release Notes"
],
"url": "https://github.com/gunthercox/ChatterBot/releases/tag/1.2.11"
},
{
"source": "security-advisories@github.com",
"tags": [
"Exploit",
"Vendor Advisory"
],
"url": "https://github.com/gunthercox/ChatterBot/security/advisories/GHSA-v4w8-49pv-mf72"
},
{
"source": "security-advisories@github.com",
"tags": [
"Exploit"
],
"url": "https://github.com/user-attachments/assets/4ee845c4-b847-4854-84ec-4b2fb2f7090f"
}
],
"sourceIdentifier": "security-advisories@github.com",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-400"
}
],
"source": "security-advisories@github.com",
"type": "Secondary"
}
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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