CVE-2026-67179: Genkit-Ai Genkit

High severity, CVSS 7.8. EPSS: 0.2% chance of exploitation in the next 30 days.

Genkit does not properly validate host request headers. Any host on the developer's network, and any website the developer visits (via DNS rebinding), can reach POST /api/runAction on the Dev UI server (default port 4000) and execute any registered Genkit action and read the result. Fixed on 2026-06-18.

Affected products

• Genkit-Ai Genkit: before 2026-06-18 (fixed in 2026-06-18)

Published 2026-08-11. Last modified 2026-08-26.