{"id":"CVE-2026-119978","aliases":["GHSA-9gvv-qjj3-2p6g","CVE-2026-73483"],"title":"Flowise through 3.1.4 Custom Function Sandbox Escape RCE via LocalFileStore","titleSource":"VulnCheck","descriptionSource":"OSV","declaredSeverity":"CRITICAL","description":"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3.1.3.","severity":"critical","score":9.4,"published":"2026-10-07T16:17:02.000Z","modified":"2026-10-31T02:55:55.928Z","withdrawn":false,"knownExploited":false,"affected":[{"ecosystem":"npm","name":"flowise","sources":[{"name":"OSV · GHSA-9gvv-qjj3-2p6g","url":"https://osv.dev/vulnerability/GHSA-9gvv-qjj3-2p6g"}],"ranges":[{"events":[{"introduced":"0"},{"fixed":"3.1.3"}],"type":"SEMVER"}],"versions":[],"fixed":["3.1.3"]},{"ecosystem":"npm","name":"flowise-components","sources":[{"name":"OSV · GHSA-9gvv-qjj3-2p6g","url":"https://osv.dev/vulnerability/GHSA-9gvv-qjj3-2p6g"}],"ranges":[{"events":[{"introduced":"0"},{"fixed":"3.1.3"}],"type":"SEMVER"}],"versions":[],"fixed":["3.1.3"]}],"sourceAffected":[],"references":["https://github.com/FlowiseAI/Flowise/blob/a65f81bb43ef66d3ce734bf0dff4223ae8041c95/packages/components/src/utils.ts#L55-L114","https://github.com/FlowiseAI/Flowise/blob/a65f81bb43ef66d3ce734bf0dff4223ae8041c95/packages/components/src/utils.ts#L1733","https://github.com/advisories/GHSA-9gvv-qjj3-2p6g","https://github.com/FlowiseAI/Flowise","https://www.vulncheck.com/advisories/flowise-through-3.1.4-custom-function-sandbox-escape-rce-via-localfilestore","https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-9gvv-qjj3-2p6g","https://nvd.nist.gov/vuln/detail/CVE-2026-73483","https://www.vulncheck.com/advisories/flowise-before-sandbox-escape-via-puppeteer"],"sources":[{"name":"CVE","id":"CVE-2026-119978","modified":"2026-10-30T17:28:31.216Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-119978"},{"name":"OSV","id":"GHSA-9gvv-qjj3-2p6g","modified":"2026-10-31T02:55:55.928331421Z","url":"https://osv.dev/vulnerability/GHSA-9gvv-qjj3-2p6g"}],"assessments":[{"source":"VulnCheck","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","score":9},{"source":"VulnCheck","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","score":8.5},{"source":"OSV","vector":"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","score":9.4}],"cve":{"records":[{"id":"CVE-2026-119978","source":"VulnCheck","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":true,"reserved":"2026-10-30T17:24:18.282Z","published":"2026-10-30T17:28:31.216Z","modified":"2026-10-30T17:28:31.216Z"}],"publishers":[{"name":"VulnCheck","role":"CNA","organizationId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","modified":"2026-10-30T17:28:31.216Z"}],"references":[{"url":"https://github.com/FlowiseAI/Flowise/blob/a65f81bb43ef66d3ce734bf0dff4223ae8041c95/packages/components/src/utils.ts#L55-L114","tags":["technical-description"],"source":"VulnCheck"},{"url":"https://github.com/FlowiseAI/Flowise/blob/a65f81bb43ef66d3ce734bf0dff4223ae8041c95/packages/components/src/utils.ts#L1733","tags":["technical-description"],"source":"VulnCheck"},{"url":"https://github.com/advisories/GHSA-9gvv-qjj3-2p6g","tags":["related"],"source":"VulnCheck"},{"url":"https://github.com/FlowiseAI/Flowise","tags":["product"],"source":"VulnCheck"},{"url":"https://www.vulncheck.com/advisories/flowise-through-3.1.4-custom-function-sandbox-escape-rce-via-localfilestore","tags":["third-party-advisory"],"source":"VulnCheck"}],"weaknesses":[{"id":"CWE-749","description":"Exposed Dangerous Method or Function","source":"VulnCheck"}],"applicability":[{"source":"VulnCheck","statements":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:flowiseai:flowise:*:*:*:*:*:*:*:*","versionEndIncluding":"3.1.4"}]}]}]}],"prioritization":[]},"products":[{"vendor":"FlowiseAI","name":"Flowise","platforms":[],"versions":[{"version":"0","status":"affected","lessThanOrEqual":"3.1.4","versionType":"semver"}],"defaultStatus":"unaffected","packageURL":"pkg:github/FlowiseAI/Flowise","cpes":[],"source":"VulnCheck","url":"https://www.cve.org/CVERecord?id=CVE-2026-119978"}],"remediation":[],"observedAt":"2026-10-31T03:14:16.389Z","kev":{"status":"not-listed","checkedAt":"2026-10-31T16:20:31.233Z"},"coverage":[{"source":"NVD","status":"available","checkedAt":"2026-10-31T03:15:31.772Z","attemptedAt":"2026-10-31T03:15:32.250Z"},{"source":"GHSA","status":"available","checkedAt":"2026-10-31T03:15:31.989Z","attemptedAt":"2026-10-31T03:15:32.806Z"},{"source":"EUVD","status":"available","checkedAt":"2026-10-31T03:15:31.634Z","attemptedAt":"2026-10-31T03:15:32.023Z"},{"source":"EPSS","status":"available","checkedAt":"2026-10-31T03:15:31.521Z","attemptedAt":"2026-10-31T03:15:32.033Z"}],"evidence":[{"source":"FIRST EPSS","id":"CVE-2026-73483","url":"https://www.first.org/epss/","probability":0.00621,"percentile":0.49762,"date":"2026-10-30","checkedAt":"2026-10-31T03:15:31.521Z"},{"source":"ENISA EUVD","id":"EUVD-2026-57799","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-57799","modified":"Aug 14, 2026, 10:25:36 PM","score":9.4,"vector":"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","checkedAt":"2026-10-31T03:15:31.634Z"},{"source":"NVD","id":"CVE-2026-73483","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-73483","modified":"2026-10-24T15:10:00.190","score":9.4,"vector":"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","checkedAt":"2026-10-31T03:15:31.772Z"},{"source":"NVD","id":"CVE-2026-73483","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-73483","modified":"2026-10-24T15:10:00.190","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","checkedAt":"2026-10-31T03:15:31.772Z"},{"source":"GitHub Advisory Database","id":"GHSA-9gvv-qjj3-2p6g","url":"https://github.com/advisories/GHSA-9gvv-qjj3-2p6g","modified":"2026-10-07T16:17:03Z","checkedAt":"2026-10-31T03:15:31.989Z"},{"source":"ENISA EUVD","id":"EUVD-2026-114243","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-114243","modified":"Oct 30, 2026, 5:28:31 PM","score":9,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","checkedAt":"2026-10-31T03:15:32.023Z"},{"source":"NVD","id":"CVE-2026-119978","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-119978","modified":"2026-10-30T18:17:27.710","score":9,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/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","checkedAt":"2026-10-31T03:15:32.250Z"},{"source":"NVD","id":"CVE-2026-119978","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-119978","modified":"2026-10-30T18:17:27.710","score":8.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","checkedAt":"2026-10-31T03:15:32.250Z"},{"source":"GitHub Advisory Database","id":"GHSA-7pc2-8w3w-pqfg","url":"https://github.com/advisories/GHSA-7pc2-8w3w-pqfg","modified":"2026-10-30T18:32:47Z","score":8.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","checkedAt":"2026-10-31T03:15:32.806Z"}],"aiSummary":null}