CVE-2026-56678: 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
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.
Details
Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-56678
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-566780.17% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 7% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-56678 | coverage & exploitation status | NVD · CVE.org |
Recent advisories for 9Router is an
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- criticalCVE-2026-63732: 9router 0.4.59 (fixed in 0.4.60) contains a chain of vulnerabilities: a hardcoded default pass…nvd · 2026-07-23
- highCVE-2026-63313: 9Router before 0.4.72 contains a server-side request forgery (SSRF) vulnerability in the /v1/w…nvd · 2026-07-23
- highCVE-2026-62312: 9Router is an AI router & token saver. Prior to 0.5.2, 9Router allows a remote authenticated a…nvd · 2026-07-15
- unknownCVE-2026-56679: 9Router is an AI router & token saver. Prior to 0.5.4, the PATCH /api/settings endpoint writes…nvd · 2026-07-15
- highCVE-2026-49353: 9Router is an AI router & token saver. In 0.4.45 and earlier, 9Router's src/dashboardGuard.js …nvd · 2026-07-15
- criticalCVE-2026-49352: 9Router is an AI router & token saver. From 0.2.21 until 0.4.44, 9Router used the hardcoded fa…nvd · 2026-07-15
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