Vulnerability Description
9Router through version 0.4.41 contains an unauthenticated information disclosure vulnerability that allows remote attackers to retrieve plaintext API keys for all connected AI provider accounts by sending a single unauthenticated request to the /api/usage/stats endpoint. Attackers can exploit the missing authentication middleware on the Next.js API route to obtain full API key strings alongside token counts, cost breakdowns, and request metadata, enabling unauthorized use of connected AI provider accounts, billing fraud, and quota exhaustion.
CVSS Score
CRITICAL
Related Weaknesses (CWE)
References
- https://github.com/decolua/9router/security/advisories/GHSA-vjc7-jrh9-9j86
- https://www.vulncheck.com/advisories/9router-unauthenticated-api-key-exposure-vi
- https://github.com/decolua/9router/security/advisories/GHSA-vjc7-jrh9-9j86
FAQ
What is CVE-2026-62327?
CVE-2026-62327 is a vulnerability with a CVSS score of 9.1 (CRITICAL). 9Router through version 0.4.41 contains an unauthenticated information disclosure vulnerability that allows remote attackers to retrieve plaintext API keys for all connected AI provider accounts by se...
How severe is CVE-2026-62327?
CVE-2026-62327 has been rated CRITICAL with a CVSS base score of 9.1/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-62327?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.