Server-Side Request Forgery (SSRF) in Flowise - CVE-2026-41271
Published: April 20, 2026
Vulnerability identifier: #VU126605
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-41271
CWE-ID: CWE-918
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: FlowiseAI
Affected software:
Flowise
Flowise
Detailed vulnerability description
The vulnerability allows a remote user to perform server-side request forgery and access internal or external HTTP endpoints.
The vulnerability exists due to server-side request forgery in POST/GET API Chain components when processing attacker-controlled prompt templates and API documentation. A remote user can send a specially crafted prompt to perform server-side request forgery and access internal or external HTTP endpoints.
The issue affects both GET and POST API chains.
How to mitigate CVE-2026-41271
Install security update from vendor's website.