{"id":"CVE-2026-41269","sourceIdentifier":"security-advisories@github.com","published":"2026-04-23T20:16:15.417","lastModified":"2026-10-26T21:10:00.170","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, the Chatflow configuration file upload settings can be modified to allow the application/javascript MIME type. This lets an attacker upload .js files even though the frontend doesn’t normally allow JavaScript uploads. This enables attackers to persistently store malicious Node.js web shells on the server, potentially leading to Remote Code Execution (RCE). This vulnerability is fixed in 3.1.0."},{"lang":"es","value":"Flowise es una interfaz de usuario de arrastrar y soltar para construir un flujo de modelo de lenguaje grande personalizado. Antes de la 3.1.0, la configuración de carga de archivos de Chatflow puede modificarse para permitir el tipo MIME application/javascript. Esto permite a un atacante subir archivos .js aunque el frontend normalmente no permite cargas de JavaScript. Esto permite a los atacantes almacenar persistentemente web shells maliciosas de Node.js en el servidor, lo que podría conducir a la ejecución remota de código (RCE). Esta vulnerabilidad está corregida en la 3.1.0."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"FlowiseAI","product":"Flowise","versions":[{"version":"< 3.1.0","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N","baseScore":7.1,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"HIGH","availabilityImpact":"NONE"},"exploitabilityScore":2.8,"impactScore":4.2},{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":8.8,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":2.8,"impactScore":5.9}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-04-24T14:21:08.211906Z","id":"CVE-2026-41269","options":[{"exploitation":"poc"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-434"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:flowiseai:flowise:*:*:*:*:*:*:*:*","versionEndExcluding":"3.1.0","matchCriteriaId":"CB30DB8F-4F72-4FD3-90FB-8331F1CBB78E"}]}]}],"references":[{"url":"https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-rh7v-6w34-w2rr","source":"security-advisories@github.com","tags":["Exploit","Vendor Advisory"]},{"url":"https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-rh7v-6w34-w2rr","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","tags":["Exploit","Vendor Advisory"]}]}