CVE-2026-46440: Flowiseai Flowise

Critical severity, CVSS 9.1. EPSS: 0.4% 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 3.1.2, the checkBasicAuth endpoint validates credentials in plaintext without rate limiting and with direct comparison. This issue has been patched in version 3.1.2.

Affected products

• Flowiseai Flowise: before 3.1.2 (fixed in 3.1.2)

Published 2026-06-08. Last modified 2026-07-23.