CVE-2026-41269
HIGH WAF: Medium
CVSS 8.8
Published: 2026-04-23
CWE-434
Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, the Chatflow configuration file upload settings can be modified to allow the application/javascript MIME type. This lets an attacker upload .js files even though the frontend doesn’t normally allow JavaScript uploads. This enables attackers to persistently store malicious Node.js web shells on the server, potentially leading to Remote Code Execution (RCE). This vulnerability is fixed in 3.1.0.
WAF Coverage Analysis
Unrestricted File Upload
Medium WAF Coverage
OWASP: A04:2021 Insecure Design
930xxx - Local File Inclusion
Affected Software
| Vendor | Product | Version |
|---|---|---|
| flowiseai | flowise | up to 3.1.0 |
References
- github.com (Exploit, Vendor Advisory)