CVE-2025-71333: Flowiseai Flowise

Critical severity, CVSS 9.8. EPSS: 0.9% chance of exploitation in the next 30 days.

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.

Affected products

• Flowiseai Flowise: up to and including 2.2.4

Published 2026-06-25. Last modified 2026-09-30.