Code Injection Vulnerability in WongKinYiu yolov9 ONNX Metadata Handler
CVE-2026-111991

5.3MEDIUM

Key Information:

Vendor

Wongkinyiu

Status
Yolov9
Vendor
CVE Published:
18 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-111991?

A code injection vulnerability has been identified in the WongKinYiu yolov9 project, specifically within the DetectMultiBackend.init function in models/common.py. This flaw arises from improper handling of argument names and stride, allowing for potential remote code execution by attackers. The vulnerability has been publicly disclosed and represents a significant risk to systems utilizing affected versions. Despite prior notification to the project maintainers, there has been no response to address this critical issue.

Affected Version(s)

yolov9 0.1

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-2026-111991 - Proof of Concept

References

https://vuldb.com/vuln/421656
vdb-entrytechnical-description
https://vuldb.com/vuln/421656/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-111991
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

r1ck99 (VulDB User)
VulDB CNA Team
.