{"id":"CVE-2026-100844","revision":"29b428236e7d48e39740a6dcee3defee","records":[{"revision":"29b428236e7d48e39740a6dcee3defee","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-100844","aliases":[],"title":"MONAI before 1.6.0 OS Command Injection via dataset_name_or_id","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.","state":0,"publishedAt":"2026-09-27T01:28:39.672+00:00","modifiedAt":"2026-10-08T15:22:02.046+00:00","affected":[{"ecosystem":"Vendor product","name":"MONAI","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Project-MONAI\",\n                    \"product\": \"MONAI\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"packageURL\": \"pkg:pypi/monai\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\",\n                            \"lessThan\": \"1.6.0\"\n                        },\n                        {\n                            \"version\": \"1.6.0\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","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","score":8.6,"severity":"HIGH"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":8.4,"severity":"HIGH"}],"references":["https://github.com/Project-MONAI/MONAI/security/advisories/GHSA-rghg-q7wp-9767","https://www.vulncheck.com/advisories/monai-before-1.6.0-os-command-injection-via-dataset-name-or-id"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-100844","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-100844","identifiers":["CVE-2026-100844"]},"retained":false,"historicalAffected":[]}],"coverage":[]}