CVE-2026-56678: Decolua 9router

Medium severity, CVSS 6.4. EPSS: 0.3% chance of exploitation in the next 30 days.

9Router is an AI router & token saver. Prior to 0.5.6, the Kiro API-key validation endpoint POST /api/oauth/kiro/api-key builds an upstream URL using a user-controlled region value, allowing an authenticated attacker to supply a crafted region such as kiro-canary.local:8443# and cause 9Router to send the Kiro validation request to an attacker-controlled host while forwarding the submitted Kiro API key as an Authorization header. This issue is fixed in version 0.5.6.

Affected products

• Decolua 9router: before 0.5.6 (fixed in 0.5.6)

Published 2026-07-15. Last modified 2026-07-16.