CVE-2026-119978 Flowise - Command Injection

Flowise <= 3.1.4 contains a sandbox escape caused by abusing allowlisted langchain and mammoth modules with ALLOW_BUILTIN_DEP=true in /api/v1/node-custom-function, letting authenticated users execute OS commands as the Flowise process user.

CVSS base score 8.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.32% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Command Injection
Impact
Remote Code Execution
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Published
30 October 2026
Updated
1 November 2026
Weakness
CWE-749

Vendor fix

Update to the latest version beyond 3.1.4 or apply patches that disable unsafe module usage.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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