Home

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.

PUBLISHED Reserved 2026-07-13 | Published 2026-07-13 | Updated 2026-07-14 | Assigner VulnCheck




CRITICAL: 9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

CRITICAL: 9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Problem types

Missing Authentication for Critical Function

Insufficiently Protected Credentials

Product status

Default status
unaffected

Any version
affected

Credits

Ngô Tấn Tài (@newnol) reporter

References

github.com/...router/security/advisories/GHSA-vjc7-jrh9-9j86 exploit

github.com/...router/security/advisories/GHSA-vjc7-jrh9-9j86 (GitHub Security Advisory (GHSA-vjc7-jrh9-9j86)) vendor-advisory

www.vulncheck.com/...ed-api-key-exposure-via-api-usage-stats (VulnCheck Advisory: 9Router 0.4.41 - Unauthenticated API Key Exposure via /api/usage/stats) third-party-advisory

cve.org (CVE-2026-62327)

nvd.nist.gov (CVE-2026-62327)

Download JSON