{"id":"CVE-2026-119978","published":"2026-10-30T18:17:27.577","lastModified":"2026-10-30T18:17:27.710","description":"Flowise through 3.1.4 contains a sandbox escape vulnerability that allows authenticated users to execute OS commands by abusing allowlisted langchain and mammoth modules when ALLOW_BUILTIN_DEP=true. Attackers can submit JavaScript to /api/v1/node-custom-function that writes a file into the mammoth package via LocalFileStore and requires it, escaping vm2 as the Flowise process user.","cvssScore":8.5,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","cwes":["CWE-749"],"vendors":[],"products":[],"references":[{"url":"https://github.com/FlowiseAI/Flowise","tags":[]},{"url":"https://github.com/FlowiseAI/Flowise/blob/a65f81bb43ef66d3ce734bf0dff4223ae8041c95/packages/components/src/utils.ts#L1733","tags":[]},{"url":"https://github.com/FlowiseAI/Flowise/blob/a65f81bb43ef66d3ce734bf0dff4223ae8041c95/packages/components/src/utils.ts#L55-L114","tags":[]},{"url":"https://github.com/advisories/GHSA-9gvv-qjj3-2p6g","tags":[]},{"url":"https://www.vulncheck.com/advisories/flowise-through-3.1.4-custom-function-sandbox-escape-rce-via-localfilestore","tags":[]}],"exploitRefs":[{"url":"https://github.com/FlowiseAI/Flowise","tags":[]},{"url":"https://github.com/FlowiseAI/Flowise/blob/a65f81bb43ef66d3ce734bf0dff4223ae8041c95/packages/components/src/utils.ts#L1733","tags":[]},{"url":"https://github.com/FlowiseAI/Flowise/blob/a65f81bb43ef66d3ce734bf0dff4223ae8041c95/packages/components/src/utils.ts#L55-L114","tags":[]},{"url":"https://github.com/advisories/GHSA-9gvv-qjj3-2p6g","tags":[]}],"hasPoc":true,"ai":null}