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Critical

Flowise: RCE via NodeVM Sandbox Escape in executeJavaScriptCode() nodeVMOptions Override

Type: advisorySources: OSV

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.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2026-69254
Confirmed fixed CVEs
Not specified
Updated in this feed
7 Nov 2026, 16:50 UTC · Revision 1

Source evidence

Flowise: RCE via NodeVM Sandbox Escape in executeJavaScriptCode() nodeVMOptions Override

core-osv · Original source

Published 4 Aug 2026, 15:28 UTC

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.

osv:CVE-2026-69254
Complete source record
{
  "id": "f6d438e937a7823383f5b2da30f92cf96abfe1f80cddaad72993a9f765e95e2d",
  "url": "https://osv.dev/vulnerability/CVE-2026-69254",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Flowise: RCE via NodeVM Sandbox Escape in executeJavaScriptCode() nodeVMOptions Override",
    "summary": "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.",
    "evidence": "osv:CVE-2026-69254",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2026-69254",
      "aliases": [
        "CVE-2026-69254",
        "GHSA-3769-jgqc-cxm7"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "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"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/flowiseai/flowise",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "09f099dbfda179e439ec677d06ad737375899eef"
                },
                {
                  "fixed": "3086cb7e323bb96c5a581d3232ef975b0d92183d"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:flowiseai:flowise:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "3.1.3"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "3086cb7e323bb96c5a581d3232ef975b0d92183d"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "09f099dbfda179e439ec677d06ad737375899eef"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "flowise@3.1.3"
                  }
                ]
              }
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          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-69254.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:51.084594098Z",
      "provider": "osv",
      "references": [
        "https://github.com/FlowiseAI/Flowise/releases/tag/flowise@3.1.3",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/69xxx/CVE-2026-69254.json",
        "https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-3769-jgqc-cxm7",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-69254",
        "https://github.com/FlowiseAI/Flowise/commit/3086cb7e323bb96c5a581d3232ef975b0d92183d",
        "https://github.com/FlowiseAI/Flowise/pull/6306"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-94"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/69xxx/CVE-2026-69254.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-69254",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 519916,
  "published_at": "2026-08-04T15:28:49.651+00:00"
}