Description
MONAI before 1.6.0 is vulnerable to OS command injection in the nnUNetV2Runner component (monai.apps.nnunet.nnunetv2_runner). User-controlled values taken from the YAML configuration file (notably dataset_name_or_id) and from CLI/kwargs arguments are concatenated into a command string without quoting or validation and then passed to subprocess with shell=True, so shell metacharacters (e.g., ';' on Linux, '&' on Windows) are interpreted. If a victim loads and processes a crafted configuration file — for example by instantiating nnUNetV2Runner with the malicious YAML and invoking a training/validation job such as train_single_model() — arbitrary commands are executed with the privileges of the user running the job.
Published: 2026-09-27
Score: 8.6 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

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History

Sun, 27 Sep 2026 02:00:00 +0000

Type Values Removed Values Added
Description MONAI before 1.6.0 is vulnerable to OS command injection in the nnUNetV2Runner component (monai.apps.nnunet.nnunetv2_runner). User-controlled values taken from the YAML configuration file (notably dataset_name_or_id) and from CLI/kwargs arguments are concatenated into a command string without quoting or validation and then passed to subprocess with shell=True, so shell metacharacters (e.g., ';' on Linux, '&' on Windows) are interpreted. If a victim loads and processes a crafted configuration file — for example by instantiating nnUNetV2Runner with the malicious YAML and invoking a training/validation job such as train_single_model() — arbitrary commands are executed with the privileges of the user running the job.
Title MONAI before 1.6.0 OS Command Injection via dataset_name_or_id
First Time appeared Project-monai
Project-monai monai
Weaknesses CWE-78
CPEs cpe:2.3:a:project-monai:monai:*:*:*:*:*:*:*:*
Vendors & Products Project-monai
Project-monai monai
References
Metrics cvssV3_1

{'score': 8.4, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 8.6, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Subscriptions

Project-monai Monai
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-09-27T01:28:39.672Z

Reserved: 2026-09-27T00:18:40.971Z

Link: CVE-2026-100844

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-27T02:17:22.993

Modified: 2026-09-27T02:17:22.993

Link: CVE-2026-100844

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses