CVE-2026-30820: Flowiseai Flowise

High severity, CVSS 8.8. EPSS: 0.6% 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 version 3.0.13, Flowise trusts any HTTP client that sets the header x-request-from: internal, allowing an authenticated tenant session to bypass all /api/v1/** authorization checks. With only a browser cookie, a low-privilege tenant can invoke internal administration endpoints (API key management, credential stores, custom function execution, etc.), effectively escalating privilege. This issue has been patched in version 3.0.13.

Affected products

• Flowiseai Flowise: before 3.0.13 (fixed in 3.0.13)

Published 2026-03-07. Last modified 2026-06-17.