CVE-2026-62327
9Router 0.4.41 - Unauthenticated API Key Exposure via /api/usage/stats
CVSS Score
9.1
EPSS Score
0.4%
EPSS Percentile
29th
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.
| CWE | CWE-306 CWE-522 |
| Vendor | decolua |
| Product | 9router |
| Published | Jul 13, 2026 |
| Last Updated | Jul 14, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None
Affected Versions
decolua / 9Router
0 ≤ 0.4.41
References
Credits
🔍 Ngô Tấn Tài (@newnol)