{"id":"CVE-2026-23842","state":"PUBLISHED","title":"ChatterBot has Denial of Service via Database Connection Pool Exhaustion","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.","publishedAt":"2026-01-19T18:39:37.059Z","updatedAt":"2026-01-20T20:05:48.462Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["gunthercox ChatterBot"],"affected":[{"vendor":"gunthercox","product":"ChatterBot","versions":[{"version":"< 1.2.11","status":"affected"}]}],"references":["https://github.com/gunthercox/ChatterBot/security/advisories/GHSA-v4w8-49pv-mf72","https://github.com/gunthercox/ChatterBot/pull/2432","https://github.com/gunthercox/ChatterBot/commit/de89fe648139f8eeacc998ad4524fab291a378cf","https://github.com/gunthercox/ChatterBot/releases/tag/1.2.11","https://github.com/user-attachments/assets/4ee845c4-b847-4854-84ec-4b2fb2f7090f"],"weaknesses":["CWE-400"],"ingestedAt":"2026-10-29T20:11:21.040Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/23xxx/CVE-2026-23842.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-23842","state":"PUBLISHED","datePublished":"2026-01-19T18:39:37.059Z","dateUpdated":"2026-01-20T20:05:48.462Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-01-16T15:46:40.842Z"},"containers":{"cna":{"title":"ChatterBot has Denial of Service via Database Connection Pool Exhaustion","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."}],"affected":[{"vendor":"gunthercox","product":"ChatterBot","versions":[{"version":"< 1.2.11","status":"affected"}]}],"references":[{"url":"https://github.com/gunthercox/ChatterBot/security/advisories/GHSA-v4w8-49pv-mf72","name":"https://github.com/gunthercox/ChatterBot/security/advisories/GHSA-v4w8-49pv-mf72","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/gunthercox/ChatterBot/pull/2432","name":"https://github.com/gunthercox/ChatterBot/pull/2432","tags":["x_refsource_MISC"]},{"url":"https://github.com/gunthercox/ChatterBot/commit/de89fe648139f8eeacc998ad4524fab291a378cf","name":"https://github.com/gunthercox/ChatterBot/commit/de89fe648139f8eeacc998ad4524fab291a378cf","tags":["x_refsource_MISC"]},{"url":"https://github.com/gunthercox/ChatterBot/releases/tag/1.2.11","name":"https://github.com/gunthercox/ChatterBot/releases/tag/1.2.11","tags":["x_refsource_MISC"]},{"url":"https://github.com/user-attachments/assets/4ee845c4-b847-4854-84ec-4b2fb2f7090f","name":"https://github.com/user-attachments/assets/4ee845c4-b847-4854-84ec-4b2fb2f7090f","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"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"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-400","lang":"en","description":"CWE-400: Uncontrolled Resource Consumption","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-01-19T18:39:37.059Z"},"source":{"advisory":"GHSA-v4w8-49pv-mf72","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-01-20T20:04:06.342314Z","id":"CVE-2026-23842","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-01-20T20:05:48.462Z"}}]}}}