CVE-2026-9306 QuantumNous new-api Midjourney Image Relay Endpoint relay-router.go GetByOnlyMJId authorization
Attackers can bypass authorization checks in the Midjourney image relay endpoint to access protected resources remotely.
- 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-2026-9306?
CVE-2026-9306 is a medium-severity missing authorization vulnerability in QuantumNous new-api, published on 23 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A security vulnerability has been detected in QuantumNous new-api up to 0.12.1. This affects the function RelayMidjourneyImage/GetByOnlyMJId of the file router/relay-router.go of the component Midjourney Image Relay Endpoint. Such manipulation leads to authorization bypass. The attack can be launched remotely. The attack requires a high level of complexity. The exploitability is reported as difficult. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Which versions are affected by CVE-2026-9306?
How do I fix CVE-2026-9306?
No fix has been published for CVE-2026-9306 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-9306 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-9306 exists.
Sources
Also known as GHSA-cgrh-9fc9-55f9.