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NVD HIGH: CVE-2026-100844 — MONAI before 1.6.0 is vulnerable to OS command injection in the nnUNetV2Runner c...

·Source: NIST NVD

Updated:

Executive Summary

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

Analysis

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. CVSS Score: 8.4. Published: 2026-09-27T02:17:22.993.

Indicators of Compromise (1)

CVE (1)
CVE-2026-100844
NVDMITRE CVE
Source Attribution

Originally published by NIST NVD on Sep 27, 2026. Verified by: NIST.

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