CVE-2026-111237
Ultralytics FastSAM AutoBackend Model Loading autobackend.py session.get_modelmeta.custom_metadata_map eval injection
- State
- Published
- Severity
- 4.8 Medium
- Published
- Oct 16, 2026
- Updated
- Oct 21, 2026
- Reserved
- Oct 15, 2026
Description
A weakness has been identified in Ultralytics FastSAM up to b4ed20c2fed75eadc5aa7d8b09fedd137b873b52. This affects the function session.get_modelmeta.custom_metadata_map of the file ultralytics/nn/autobackend.py of the component AutoBackend Model Loading. This manipulation of the argument imgsz/names/kpt_shape causes improper neutralization of directives in dynamically evaluated code. The attack requires local access. This product uses a rolling release model to deliver continuous updates. As a result, specific version information for affected or updated releases is not available. The project was informed of the problem early through an issue report but has not responded yet.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 4.8 Medium | CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X | VulDB |
| 3.1 | 5.3 Medium | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:C | VulDB |
| 3.0 | 5.3 Medium | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:C | VulDB |
| 2.0 | 4.3 Medium | AV:L/AC:L/Au:S/C:P/I:P/A:P/E:ND/RL:ND/RC:C | VulDB |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
FastSAMUltralytics |
|
References
- VDB-420764 | Ultralytics FastSAM AutoBackend Model Loading autobackend.py session.get_modelmeta.custom_metadata_map eval injectionvdb-entrytechnical-description
- VDB-420764 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
- CVE-2026-111237 | CVE Analysis and Reportthird-party-advisory
- Submit #1004882 | CASIA-LMC-Lab FastSAM up to main commit b4ed20c2fed75eadc5aa7d8b09fedd137b873b52 (vendors ultralytics 8.0.120) Code Injectionthird-party-advisory
- https://github.com/CASIA-LMC-Lab/FastSAM/issues/288issue-tracking
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