CVE-2026-56678

mediumCVSS 6.4covered by 1 sourcefirst seen 2026-07-15

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.

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Exploitation outlook

Low exploitation risk0.17% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 7% of all EPSS-scored CVEs.

Advisory coverage (1)

mediumCVE-2026-56678: 9Router is an AI router & token saver. Prior to 0.5.6, the Kiro API-key validation endpoint PO…nvd · 2026-07-15

External references

NVD record for CVE-2026-56678

CVE.org record

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