Code injection in WongKinYiu yolov9 ONNX metadata handler
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Passive
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Code execution
- Confidentiality · integrity · availability
- Low · Low · Low
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-94.
Summary
WongKinYiu yolov9 0.1 contains a code injection flaw (CWE-94) in the DetectMultiBackend.__init__ function of models/common.py, where the names/stride argument is handled unsafely. A remote attacker without privileges can inject code, but the attack requires user interaction. A public exploit has been disclosed and may be used.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Description from the CNA
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| WongKinYiu | yolov9 | 0.1 | — | No fix listed | CNA |
- yolov9 VendorWongKinYiu Affected 0.1 Fixed in — No fix listed CNA
CPE names CNA · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:wongkinyiu:yolov9:*:*:*:*:*:*:*:* | — | — | WongKinYiu |
- cpe:2.3:a:wongkinyiu:yolov9:*:*:*:*:*:*:*:* Versions — — ·WongKinYiu
Remediation
The sources list no fixed version for yolov9.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Timeline
- 2026-10-18 Threatist record created from CVE-2026-111991
- 2026-10-18 Alias added: GHSA-fj9f-3w9g-75gj
- 2026-10-22 CISA SSVC decision points changed
- 2026-10-22 Priority changed: LOW → MEDIUM
References
Sources
- CVE-2026-111991 · CVE Program
- CVE-2026-111991 · NVD
- FIRST EPSS
- GHSA-fj9f-3w9g-75gj · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences