{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-119978", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-10-30T17:24:18.282Z", "datePublished": "2026-10-30T17:28:31.216Z", "dateUpdated": "2026-10-30T17:28:31.216Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-10-30T17:28:31.216Z"}, "datePublic": "2026-10-30T00:00:00.000Z", "title": "Flowise through 3.1.4 Custom Function Sandbox Escape RCE via LocalFileStore", "descriptions": [{"lang": "en", "value": "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."}], "tags": ["unsupported-when-assigned"], "problemTypes": [{"descriptions": [{"lang": "en", "description": "Exposed Dangerous Method or Function", "cweId": "CWE-749", "type": "CWE"}]}], "affected": [{"vendor": "FlowiseAI", "product": "Flowise", "packageURL": "pkg:github/FlowiseAI/Flowise", "defaultStatus": "unaffected", "versions": [{"version": "0", "lessThanOrEqual": "3.1.4", "status": "affected", "versionType": "semver"}], "repo": "https://github.com/FlowiseAI/Flowise"}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:flowiseai:flowise:*:*:*:*:*:*:*:*", "versionEndIncluding": "3.1.4"}]}]}], "metrics": [{"format": "CVSS", "cvssV4_0": {"version": "4.0", "vectorString": "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", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "HIGH", "subIntegrityImpact": "HIGH", "subAvailabilityImpact": "HIGH", "baseScore": 9, "baseSeverity": "CRITICAL"}}, {"format": "CVSS", "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseScore": 8.5, "baseSeverity": "HIGH"}}], "references": [{"url": "https://github.com/FlowiseAI/Flowise/blob/a65f81bb43ef66d3ce734bf0dff4223ae8041c95/packages/components/src/utils.ts#L55-L114", "tags": ["technical-description"]}, {"url": "https://github.com/FlowiseAI/Flowise/blob/a65f81bb43ef66d3ce734bf0dff4223ae8041c95/packages/components/src/utils.ts#L1733", "tags": ["technical-description"]}, {"url": "https://github.com/advisories/GHSA-9gvv-qjj3-2p6g", "tags": ["related"], "name": "GitHub Security Advisory (GHSA-9gvv-qjj3-2p6g)"}, {"url": "https://github.com/FlowiseAI/Flowise", "tags": ["product"]}, {"name": "VulnCheck Advisory: Flowise through 3.1.4 Custom Function Sandbox Escape RCE via LocalFileStore", "tags": ["third-party-advisory"], "url": "https://www.vulncheck.com/advisories/flowise-through-3.1.4-custom-function-sandbox-escape-rce-via-localfilestore"}], "credits": [{"lang": "en", "value": "soovwv", "type": "finder"}], "x_generator": {"engine": "vulncheck-endgame"}}}}

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