CVE-2026-62327 | 9Router through version 0.4.41 contain an unauthenticated in… | CVSS 9.1 CRITICAL

Description

9Router through version 0.4.41 contain 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.

Metadata

CVE ID: CVE-2026-62327
State: PUBLISHED
Assigner: VulnCheck
Reserved: 2026-07-13 21:36 UTC
Published: 2026-07-13 21:37 UTC
Last updated: 2026-07-13 21:37 UTC
Primary CWE: CWE-306
Missing Authentication for Critical Function
Vendor / Product: decolua / 9Router
Sources: cve.org · NVD

Severity & Metrics

9.1 CRITICAL CVSS 3.1

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

Affected products (1)

Vendor	Product	Platform	Versions
decolua	9Router	—	0 ≤ 0.4.41

Weakness (CWE)

CWE	Source	Description
CWE-306	cna	Missing Authentication for Critical Function
CWE-522	cna	Insufficiently Protected Credentials

CVSS scores (2)

Score	Severity	Version	Source	Vector
9.3	CRITICAL	4.0	cna	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
9.1	CRITICAL	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

References (2)

GitHub Security Advisory (GHSA-vjc7-jrh9-9j86) https://github.com/decolua/9router/security/advisories/GHSA-vjc7-jrh9-9j86
VulnCheck Advisory: 9Router 0.4.41 - Unauthenticated API Key Exposure via /api/usage/stats https://www.vulncheck.com/advisories/9router-unauthenticated-api-key-exposure-via-api-usage-stats