Code Injection in Flowise - CVE-2026-69254
Published: July 30, 2026
Vulnerability identifier: #VU140076
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-69254
CWE-ID: CWE-94
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to execute arbitrary system commands.
The vulnerability exists due to improper control of code generation in executeJavaScriptCode() when processing caller-provided nodeVMOptions in a NodeVM sandbox. A remote user can supply crafted JavaScript and override sandbox module restrictions to execute arbitrary system commands.
Exploitation requires a valid API key and occurs through the node-custom-function execution path. The executed commands run with root privileges in the documented deployment context.
Affected software
Flowise
How to mitigate CVE-2026-69254
Install security update from vendor's website.
Flowise - update to 3.1.3