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CVE

CVE-2026-62327

9Router 0.4.41 - Unauthenticated API Key Exposure via /api/usage/stats
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CVE

CVE-2026-62327

9Router 0.4.41 - Unauthenticated API Key Exposure via /api/usage/stats

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.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
8.7
-
4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
C
H
U
0
-
C
H
U
-

Related Resources

No items found.

References

https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/62xxx/CVE-2026-62327.json, https://github.com/decolua/9router/security/advisories/GHSA-vjc7-jrh9-9j86, https://nvd.nist.gov/vuln/detail/CVE-2026-62327, https://www.vulncheck.com/advisories/9router-unauthenticated-api-key-exposure-via-api-usage-stats, https://github.com/decolua/9router

Severity

7.5

CVSS Score
0
10

Basic Information

Base CVSS
7.5
EPSS Probability
0.00624%
EPSS Percentile
0.47154%
Introduced Version
0
Fix Available
cebc72e3438dca5aad69b2828cb0d0f2e54b168d

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