CVE-2026-41266: Flowiseai Flowise

High severity, CVSS 7.5. EPSS: 0.5% chance of exploitation in the next 30 days.

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, /api/v1/public-chatbotConfig/:id ep exposes sensitive data including API keys, HTTP authorization headers and internal configuration without any authentication. An attacker with knowledge just of a chatflow UUID can retrieve credentials stored in password type fields and HTTP headers, leading to credential theft and more. This vulnerability is fixed in 3.1.0.

Affected products

• Flowiseai Flowise: before 3.1.0 (fixed in 3.1.0)

Published 2026-04-23. Last modified 2026-06-17.