RCE in Huggingface Finetrainers
CVE-2026-124588
A security flaw has been discovered in huggingface finetrainers 0.1.0/0.2.0. The impacted element is the function resolve_component_cls of the file finetrainers/utils/model.py of the component Model Index Handler. Performing a manipulation of the argument Library results in code injection. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.
Published · last modified .
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
- Huggingface Finetrainers — versions 0.1.0, 0.2.0
Weakness classification (CWE)
References
- vuldb.com/vuln/433012 (technical-description, vdb-entry)
- vuldb.com/vuln/433012/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-124588 (third-party-advisory)
- vuldb.com/submit/1040375 (third-party-advisory)
- github.com/huggingface/finetrainers/issues/435 (issue-tracking)
- github.com/user-attachments/files/33587108/poc.zip (exploit)
- github.com/huggingface/finetrainers/ (product)
Frequently asked questions
- What is CVE-2026-124588?
- CVE-2026-124588 is a medium-severity vulnerability in Huggingface Finetrainers, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 6.3/10. Published 2026-11-09.
- How severe is CVE-2026-124588?
- Medium severity. CVSS v3 base score is 6.3 out of 10.