All vulnerabilities
CVE-2026-100844GHSA-rghg-q7wp-9767PYSEC-2026-4019

MONAI before 1.6.0 OS Command Injection via dataset_name_or_id

Project-MONAI MONAIPyPILibraries & packages
Open in ThreatlineRecord JSON
CVSS
8.6High
ExploitationPublic exploit codeCISA's assessment says proof of concept code is public, assessed 28 Sep 2026. Not in the KEV catalogCISA via CVE List
Exploit odds (EPSS)0.77%Chance of exploitation activity in the next 30 days, higher than 55% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in1.6.0Fixed versionCVE List
Published27 Sep 2026Updated 8 Oct 2026CVE List

What fixes it

  • 1.6.0MONAICVE List
  • 1.6.0monai, PyPIOSVpip install "monai>=1.6.0"

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

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.

Text from CVE List

Affected versions 46

  • MONAIaffected: all versions before 1.6.0CVE List
  • MONAIunaffected: 1.6.0CVE List
  • monai, PyPIfrom first release, fixed in 1.6.0OSV
  • monai, PyPI0.0.1OSV
  • monai, PyPI0.1.0OSV
  • monai, PyPI0.2.0OSV
  • monai, PyPI0.3.0OSV
  • monai, PyPI0.4.0OSV
  • monai, PyPI0.5.0OSV
  • monai, PyPI0.5.1OSV
  • monai, PyPI0.5.2OSV
  • monai, PyPI0.5.3OSV
  • monai, PyPI0.6.0OSV
  • monai, PyPI0.7.0OSV
  • monai, PyPI0.8.0OSV
  • monai, PyPI0.8.1OSV
  • monai, PyPI0.9.0OSV
  • monai, PyPI0.9.1OSV
  • monai, PyPI1.0.0OSV
  • monai, PyPI1.0.1OSV
  • monai, PyPI1.1.0OSV
  • monai, PyPI1.2.0OSV
  • monai, PyPI1.3.0OSV
  • monai, PyPI1.3.1OSV
  • monai, PyPI1.3.2OSV
  • monai, PyPI1.3.2rc1OSV
  • monai, PyPI1.3.3rc1OSV
  • monai, PyPI1.4.0OSV
  • monai, PyPI1.4.0rc1OSV
  • monai, PyPI1.4.0rc10OSV
  • monai, PyPI1.4.0rc11OSV
  • monai, PyPI1.4.0rc12OSV
  • monai, PyPI1.4.0rc2OSV
  • monai, PyPI1.4.0rc3OSV
  • monai, PyPI1.4.0rc4OSV
  • monai, PyPI1.4.0rc5OSV
  • monai, PyPI1.4.0rc6OSV
  • monai, PyPI1.4.0rc7OSV
  • monai, PyPI1.4.0rc8OSV
  • monai, PyPI1.4.0rc9OSV
  • monai, PyPI1.4.1rc1OSV
  • monai, PyPI1.5.0OSV
  • monai, PyPI1.5.0rc1OSV
  • monai, PyPI1.5.1OSV
  • monai, PyPI1.5.2OSV
  • monai, PyPI1.5.2rc1OSV

References 2