CVE-2026-62327 9Router 0.4.41 - Unauthenticated API Key Exposure via /api/usage/stats

Critical 9.3 Published Updated

Unauthenticated attackers can retrieve plaintext API keys and usage data from the /api/usage/stats endpoint, leading to unauthorized account access and billing fraud.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2026-62327?

CVE-2026-62327 is a critical vulnerability in decolua 9Router, published on 13 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Weakness: CWE-522, CWE-306

Which versions are affected by CVE-2026-62327?

How do I fix CVE-2026-62327?

No fix has been published for CVE-2026-62327 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-62327 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-62327 exists.

Sources

Also known as GHSA-7gvh-h32g-9cfw.

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