Auth bypass in Quantumnous New-Api
CVE-2026-9306
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.7 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.005 (37.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 37th percentile — 37.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.005 · change: +0.002
Affected products
- Quantumnous New-Api — versions 0.12.0, 0.12.1
Weakness classification (CWE)
References
- vuldb.com/vuln/365253 (technical-description, vdb-entry)
- vuldb.com/vuln/365253/cti (signature, permissions-required)
- vuldb.com/submit/812196 (third-party-advisory)
- gist.github.com/YLChen-007/13974ead25fc6dac42fd7bac62fbb2df (exploit)
Frequently asked questions
- What is CVE-2026-9306?
- CVE-2026-9306 is a low-severity vulnerability in Quantumnous New-Api, classified under Improper Authorization. CVSS score: 3.7/10. Published 2026-05-23.
- How severe is CVE-2026-9306?
- Low severity. CVSS v3 base score is 3.7 out of 10.