TI-2026-64982 Aliases CVE-2026-100844 GHSA-x7wh-49x3-6748

MONAI before 1.6.0 OS Command Injection via dataset_name_or_id

HIGH 72CWE-78Published 2026-09-27 · Updated 2026-10-08

Key facts

Attack vector: Local
Privileges required: None
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-78.

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 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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00922 60th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Fixed MONAI (Project-MONAI): 1.6.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Project-MONAI	MONAI	before 1.6.0	1.6.0	Patch available	CNA

MONAI VendorProject-MONAI Affected before 1.6.0 Fixed in 1.6.0 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:project-monai:monai::::::::	before 1.6.0	Vulnerable	Project-MONAI

cpe:2.3:a:project-monai:monai:*:*:*:*:*:*:*:* Versions before 1.6.0 Vulnerable ·Project-MONAI

Remediation

Fix · CNA MONAI (Project-MONAI) Fixed in 1.6.0

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

Release · 2026-09-27
Project-MONAI MONAI 1.6.0
3 records Highest priority Priority HIGH 3 HIGH
Other records, highest priority first
- TI-2026-64983 MONAI before 1.6.0 Remote Code Execution via NumpyReaderPriority HIGH 72
- TI-2026-64981 MONAI before 1.6.0 Remote Code Execution via algo_from_picklePriority HIGH 72
Show all 3 records →

Timeline

2026-10-02 Threatist record created from CVE-2026-100844
2026-10-03 Alias added: GHSA-x7wh-49x3-6748

References

Exploit 1

GitHub Security Advisory (GHSA-rghg-q7wp-9767)

TI-2026-64984 MONAI before 1.5.2 Remote Code Execution via Pickle Deserialization CVSS 4.0HIGH 8.8
TI-2026-64983 MONAI before 1.6.0 Remote Code Execution via NumpyReader CVSS 4.0HIGH 8.5
TI-2026-64981 MONAI before 1.6.0 Remote Code Execution via algo_from_pickle CVSS 4.0HIGH 8.5
TI-2026-64978 MONAI through 1.6.0 Remote Code Execution via bundle configuration CVSS 4.0HIGH 8.5
TI-2026-64980 MONAI through 1.6.0 _get_fake_spatial_shape eval() Sandbox Bypass via Attribute Chains CVSS 4.0HIGH 7.3
TI-2026-17553 MONAI has Path Traversal (Zip Slip) in NGC Private Bundle Download CVSS 3.1MEDIUM 5.3

See all 7 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences