RCE in Wongkinyiu Yolov9
CVE-2026-111991
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.
Published .
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Wongkinyiu Yolov9 — versions 0.1
Weakness classification (CWE)
References
- github.com/WongKinYiu/yolov9/ (product)
- github.com/WongKinYiu/yolov9/issues/670 (issue-tracking, exploit)
- vuldb.com/cve/CVE-2026-111991 (third-party-advisory)
- vuldb.com/submit/1007973 (third-party-advisory)
- vuldb.com/vuln/421656 (technical-description, vdb-entry)
- vuldb.com/vuln/421656/cti (signature, permissions-required)
Frequently asked questions
- What is CVE-2026-111991?
- CVE-2026-111991 is a medium-severity vulnerability in Wongkinyiu Yolov9, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 6.3/10. Published 2026-10-18.
- How severe is CVE-2026-111991?
- Medium severity. CVSS v3 base score is 6.3 out of 10.