Code Injection in Flowise - CVE-2026-41264
Published: April 20, 2026
Vulnerability identifier: #VU126598
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2026-41264
CWE-ID: CWE-94
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: FlowiseAI
Affected software:
Flowise
Flowise
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary code.
The vulnerability exists due to improper sandboxing in the run method of the CSV_Agents class when evaluating an LLM-generated python script from user-supplied prompts. A remote attacker can send a specially crafted prompt to cause execution of attacker-controlled code.
Exploitation requires a chatflow that uses the CSV Agent node, and successful prompt injection may depend on the model used.
How to mitigate CVE-2026-41264
Install security update from vendor's website.