CVE-2026-41270 HIGH

CVE-2026-41270: Flowise: SSRF Protection Bypass via Unprotected Built-in HTTP Modules in Custom Function Sandbox

Vendor Flowiseai
Product Flowise
Weakness CWE-284
Published April 23, 2026
Last update April 25, 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:3.1/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) 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.

Key dates

02Disclosure timeline

April 23, 2026 CVE published
April 25, 2026 Record updated

Related vulnerabilities

04Related CVE

CVE-2020-3186 Cisco Firepower Threat Defense Software Management Access List Bypass Vulnerability CVE-2026-23495 Pimcore's Admin Classic Bundle is Missing Function Level Authorization on "Predefined Properties" Listing CVE-2026-40304 zrok's broken ownership check in DELETE /api/v2/unaccess allows non-admin to delete global frontend records CVE-2026-22728 sealed-secrets /v1/rotate can widen sealing scope to cluster-wide via attacker-controlled template annotations CVE-2018-1129