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) protection bypass vulnerability exists in the Custom Function feature. While the application implements SSRF protection via HTTP_DENY_LIST for axios and node-fetch libraries, the built-in Node.js http, https, and net modules are allowed in the NodeVM sandbox without equivalent protection. This allows authenticated users to bypass SSRF controls and access internal network resources (e.g., cloud provider metadata services) This vulnerability is fixed in 3.1.0.
Use CWE-284, Flowiseai vendor hub and Flowise product page to widen CVE-2026-41270 into its surrounding weakness, vendor, and product context.
Compare it with CVE-2026-41268, CVE-2026-41278 and CVE-2026-41271 for nearby disclosures in the same product family.