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CVE-2026-111991— WongKinYiu yolov9 ONNX Metadata common.py DetectMultiBackend.__init__ code injection

Quick assessment

Affected
WongKinYiu yolov9
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 WongKinYiu 的 yolov9 0.1 版本中发现了一个安全漏洞。该漏洞影响组件"ONNX 元数据处理器”中文件 models/common.py 的 DetectMultiBackend.__init__ 函数。攻击者可通过操纵参数名称或步长（stride）实现代码注入，且该漏洞可被远程利用。相关利用方式已公开披露，可能被恶意利用。项目方已早期通过问题报告获知此漏洞，但截至目前尚未作出回应。

CVSS 6.3 · Medium

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
WongKinYiu yolov9 0.1 affected
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I. Basic Information for CVE-2026-111991

Vulnerability Information
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Vulnerability Title
WongKinYiu yolov9 ONNX Metadata common.py DetectMultiBackend.__init__ code injection
Source: CVE Program / CVE List V5
Vulnerability Description
A security vulnerability has been detected in WongKinYiu yolov9 0.1. This vulnerability affects the function DetectMultiBackend.__init__ of the file models/common.py of the component ONNX Metadata Handler. The manipulation of the argument names/stride leads to code injection. Remote exploitation of the attack is possible. The exploit has been disclosed publicly and may be used. The project was informed of the problem early through an issue report but has not responded yet.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
对生成代码的控制不恰当(代码注入)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
WongKinYiu yolov9 0.1 cpe:2.3:a:wongkinyiu:yolov9:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-111991

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-111991

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Other References for CVE-2026-111991 (2)

IV. Related Vulnerabilities

Same weakness: CWE-94

V. Comments for CVE-2026-111991

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