Authorization Bypass in QuantumNous new-api Affecting Image Relay Functionality
CVE-2026-9306

6.3MEDIUM

Key Information:

Vendor

Quantumnous

Status
New-api
Vendor
CVE Published:
23 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-9306?

A security vulnerability exists in the QuantumNous new-api, particularly in the Midjourney Image Relay Endpoint, found in the function RelayMidjourneyImage/GetByOnlyMJId. This vulnerability allows attackers to bypass authorization mechanisms, leading to unauthorized access to sensitive functionalities. The exploitation requires significant technical complexity and can be initiated remotely, raising concerns for system security. Despite early disclosure attempts to the vendor, no responsive action has been documented, magnifying the urgency for users to assess and address potential security risks associated with this vulnerability.

Affected Version(s)

new-api 0.12.0

new-api 0.12.1

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-9306 - Proof of Concept

References

https://vuldb.com/vuln/365253
vdb-entrytechnical-description
https://vuldb.com/vuln/365253/cti
signaturepermissions-required
https://vuldb.com/submit/812196
third-party-advisory

CVSS V4

Score:
6.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Eric-e (VulDB User)
VulDB CNA Team
.