Improper access control in Flowise - CVE-2026-41268
Published: May 4, 2026
Vulnerability identifier: #VU129611
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-41268
CWE-ID: CWE-284
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 access control in the replaceInputsWithConfig function when handling overrideConfig parameters containing the FILE-STORAGE:: keyword. A remote attacker can send a specially crafted HTTP request to execute arbitrary code.
Exploitation requires a public chatflow with API Override enabled and an MCP tool node present.
How to mitigate CVE-2026-41268
Install security update from vendor's website.