RCE in Ultralytics Fastsam
CVE-2026-111237
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.
Vulnerability class: RCE (Remote Code Execution)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/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
- Ultralytics Fastsam — versions b4ed20c2fed75eadc5aa7d8b09fedd137b873b52
Weakness classification (CWE)
References
- vuldb.com/vuln/420764 (technical-description, vdb-entry)
- vuldb.com/vuln/420764/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-111237 (third-party-advisory)
- vuldb.com/submit/1004882 (third-party-advisory)
- github.com/CASIA-LMC-Lab/FastSAM/issues/288 (issue-tracking)
Frequently asked questions
- What is CVE-2026-111237?
- CVE-2026-111237 is a medium-severity vulnerability in Ultralytics Fastsam, classified under Code Injection. CVSS score: 5.3/10. Published 2026-10-16.
- How severe is CVE-2026-111237?
- Medium severity. CVSS v3 base score is 5.3 out of 10.