{"id":"CVE-2026-73483","sourceIdentifier":"disclosure@vulncheck.com","published":"2026-08-13T12:17:23.540","lastModified":"2026-10-24T15:10:00.190","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"Flowise (packages flowise and flowise-components) in versions <= 3.1.2 contain a sandbox escape in the vm2/@flowiseai/nodevm JavaScript sandbox. An authenticated user with access to the /api/v1/node-custom-function endpoint can escape the sandbox by supplying attacker-controlled executablePath and args parameters to puppeteer.launch(), which internally invokes child_process.spawn() outside the sandbox boundary. This allows execution of arbitrary OS commands as the Flowise process user (root in the official Docker image) and arbitrary host file disclosure via Chromium's file:// URL handling. In versions 3.0.8–3.1.2 exploitation requires ALLOW_BUILTIN_DEP=true; earlier versions are exploitable by default. Fixed in 3.1.3."},{"lang":"es","value":"Flowise (paquetes flowise y flowise-components) en versiones menor o igual que 3.1.2 contienen un escape de sandbox en el sandbox JavaScript vm2/@flowiseai/nodevm. Un usuario autenticado con acceso al endpoint /api/v1/node-custom-function puede escapar del sandbox al proporcionar parámetros executablePath y args controlados por el atacante a puppeteer.launch(), que invoca internamente child_process.spawn() fuera del límite del sandbox. Esto permite la ejecución de comandos arbitrarios del sistema operativo como el usuario del proceso de Flowise (root en la imagen oficial de Docker) y la divulgación arbitraria de archivos del host a través del manejo de URL file: // de Chromium. En las versiones 3.0.8-3.1.2 la explotación requiere ALLOW_BUILTIN_DEP=true; las versiones anteriores son explotables por defecto. Corregido en 3.1.3."}],"affected":[{"source":"disclosure@vulncheck.com","affectedData":[{"vendor":"FlowiseAI","product":"Flowise","defaultStatus":"unaffected","packageURL":"pkg:npm/flowise","versions":[{"version":"0","lessThan":"3.1.3","versionType":"semver","status":"affected"},{"version":"3.1.3","versionType":"semver","status":"unaffected"}]},{"vendor":"FlowiseAI","product":"Flowise","defaultStatus":"unaffected","packageURL":"pkg:npm/flowise-components","versions":[{"version":"0","lessThan":"3.1.3","versionType":"semver","status":"affected"},{"version":"3.1.3","versionType":"semver","status":"unaffected"}]}]}],"metrics":{"cvssMetricV40":[{"source":"disclosure@vulncheck.com","type":"Secondary","cvssData":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","baseScore":9.4,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","subAvailabilityImpact":"HIGH","exploitMaturity":"NOT_DEFINED","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}}],"cvssMetricV31":[{"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":"2026-08-14T22:25:16.050386Z","id":"CVE-2026-73483","options":[{"exploitation":"poc"},{"automatable":"yes"},{"technicalImpact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"disclosure@vulncheck.com","type":"Secondary","description":[{"lang":"en","value":"CWE-78"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:flowiseai:flowise:*:*:*:*:*:*:*:*","versionEndIncluding":"3.1.2","matchCriteriaId":"4161D3F2-D78A-4305-A85F-2851D7704224"}]}]}],"references":[{"url":"https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-9gvv-qjj3-2p6g","source":"disclosure@vulncheck.com","tags":["Exploit","Mitigation","Vendor Advisory"]},{"url":"https://www.vulncheck.com/advisories/flowise-before-sandbox-escape-via-puppeteer","source":"disclosure@vulncheck.com","tags":["Third Party Advisory"]},{"url":"https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-9gvv-qjj3-2p6g","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","tags":["Exploit","Mitigation","Vendor Advisory"]}]}