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.
Advisories
No advisories yet.
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Fri, 30 Oct 2026 17:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | Flowise through 3.1.4 Custom Function Sandbox Escape RCE via LocalFileStore | |
| First Time appeared |
Flowiseai
Flowiseai flowise |
|
| Weaknesses | CWE-749 | |
| CPEs | cpe:2.3:a:flowiseai:flowise:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Flowiseai
Flowiseai flowise |
|
| References |
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|
| Metrics |
cvssV3_1
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Projects
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Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-10-30T17:28:31.216Z
Reserved: 2026-10-30T17:24:18.282Z
Link: CVE-2026-119978
No data.
Status : Deferred
Published: 2026-10-30T18:17:27.577
Modified: 2026-10-30T18:17:27.710
Link: CVE-2026-119978
No data.
OpenCVE Enrichment
Updated: 2026-10-30T19:00:15Z
Weaknesses