CVE-2026-41271 HIGH

CVE-2026-41271: Flowise: APIChain Prompt Injection SSRF in GET/POST API Chains

Vendor Flowiseai
Product Flowise
Weakness CWE-918 · SSRF
Published April 23, 2026
Last update April 23, 2026
View on NVD All CVEs

CVSS base score

7.1/10
Attack vector Network
Attack complexity High
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L

What the vulnerability does

01Description

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, a Server-Side Request Forgery (SSRF) vulnerability exists in FlowiseAI's POST/GET API Chain components that allows unauthenticated attackers to force the server to make arbitrary HTTP requests to internal and external systems. By injecting malicious prompt templates, attackers can bypass the intended API documentation constraints and redirect requests to sensitive internal services, potentially leading to internal network reconnaissance and data exfiltration. This vulnerability is fixed in 3.1.0.

Key dates

02Disclosure timeline

April 23, 2026 CVE published
April 23, 2026 Record updated