CVE-2026-41270
Flowise: SSRF Protection Bypass via Unprotected Built-in HTTP Modules in Custom Function Sandbox
CVSS Score
7.1
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-284 CWE-918 |
| Vendor | flowiseai |
| Product | flowise |
| Published | Apr 23, 2026 |
| Last Updated | Apr 23, 2026 |
Stay Ahead of the Next One
Get instant alerts for flowiseai flowise
Be the first to know when new high vulnerabilities affecting flowiseai flowise are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
Low
Affected Versions
FlowiseAI / Flowise
< 3.1.0
FlowiseAI / flowise-components
< 3.1.0