FKIE_CVE-2026-23842

Vulnerability from fkie_nvd - Published: 2026-01-19 19:16 - Updated: 2026-06-17 10:22
Severity
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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
security-advisories@github.comhttps://github.com/gunthercox/ChatterBot/commit/de89fe648139f8eeacc998ad4524fab291a378cfPatch
security-advisories@github.comhttps://github.com/gunthercox/ChatterBot/pull/2432Issue Tracking
security-advisories@github.comhttps://github.com/gunthercox/ChatterBot/releases/tag/1.2.11Product, Release Notes
security-advisories@github.comhttps://github.com/gunthercox/ChatterBot/security/advisories/GHSA-v4w8-49pv-mf72Exploit, Vendor Advisory
security-advisories@github.comhttps://github.com/user-attachments/assets/4ee845c4-b847-4854-84ec-4b2fb2f7090fExploit
Impacted products
Vendor Product Version
chatterbot chatterbot *
To clipboard 

{
  "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"
    }
  ]
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





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.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.