Flowise through 2.2.4 contains an unauthenticated arbitrary file upload vulnerability in the /api/v1/attachments endpoint when storageType is set to local. Attackers can exploit path traversal in the chatId and chatflowId parameters to upload malicious files to arbitrary directories, potentially enabling remote code execution and server compromise.
Fix
Patch, vendor advisory and mitigation references on NVD 2
- https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-h42x-xx2q-6v6g Vendor Advisory, Exploit
- https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-h42x-xx2q-6v6g Vendor Advisory, Exploit
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 9.3 · flowiseaiNVD modified 2026-10-12 21:10
Affected (CPE criteria) 1
cpe:2.3:a:flowiseai:flowise:*:*:*:*:*:*:*:*
References 3
- https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-h42x-xx2q-6v6g Vendor Advisory, Exploit
- https://www.vulncheck.com/advisories/flowise-arbitrary-file-upload-via-unauthenticated-api-v1-attachments-endpoint Third Party Advisory
- https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-h42x-xx2q-6v6g Vendor Advisory, Exploit