Vulnerability Description
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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/decolua/9router/commit/126aa244c5b51b74ab8c7594e3418fcf4437bf
- https://github.com/decolua/9router/releases/tag/v0.5.6
- https://github.com/decolua/9router/security/advisories/GHSA-6mwv-4mrm-5p3m
- https://github.com/decolua/9router/security/advisories/GHSA-6mwv-4mrm-5p3m
FAQ
What is CVE-2026-56678?
CVE-2026-56678 is a vulnerability with a CVSS score of 6.4 (MEDIUM). 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 authen...
How severe is CVE-2026-56678?
CVE-2026-56678 has been rated MEDIUM with a CVSS base score of 6.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-56678?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.