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.
Fix
Patch, vendor advisory and mitigation references on NVD 2
- https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-rh7v-6w34-w2rr Exploit, Vendor Advisory
- https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-rh7v-6w34-w2rr Exploit, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 8.8 · flowiseaiNVD modified 2026-10-26 21:10
Affected (CPE criteria) 1
cpe:2.3:a:flowiseai:flowise:*:*:*:*:*:*:*:*
References 2
- https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-rh7v-6w34-w2rr Exploit, Vendor Advisory
- https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-rh7v-6w34-w2rr Exploit, Vendor Advisory