{"id":"CVE-2026-100844","summary":"MONAI before 1.6.0 OS Command Injection via dataset_name_or_id","details":"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.","aliases":["GHSA-rghg-q7wp-9767"],"modified":"2026-09-29T03:30:40.474847774Z","published":"2026-09-27T01:28:39.672Z","database_specific":{"cna_assigner":"VulnCheck","cwe_ids":["CWE-78"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/100xxx/CVE-2026-100844.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/100xxx/CVE-2026-100844.json"},{"type":"ADVISORY","url":"https://github.com/Project-MONAI/MONAI/security/advisories/GHSA-rghg-q7wp-9767"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-100844"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/monai-before-1.6.0-os-command-injection-via-dataset-name-or-id"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/project-monai/monai","events":[{"introduced":"0"},{"fixed":"eccefc57550b111ed781d82249dfe77872a0e918"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"1.6.0"}],"source":["AFFECTED_FIELD","DESCRIPTION"]}}],"versions":["1.5.1","1.5.0","1.5.0rc1","1.4.1rc1","1.4.0","1.4.0rc12","1.4.0rc11","1.4.0rc10","1.4.0rc9","1.4.0rc8","1.4.0rc7","1.4.0rc6","1.4.0rc5","1.4.0rc4","1.4.0rc3","1.4.0rc2","1.4.0rc1","1.3.3rc1","1.3.1","1.3.1rc8","1.3.1rc7","1.3.1rc6","1.3.1rc5","1.3.1rc4","1.3.1rc3","1.3.1rc2","1.3.1rc1","1.3.0","1.3.0rc5","1.3.0rc4","1.3.0rc3","1.3.0rc2","1.3.0rc1","1.2.0","1.2.0rc7","1.2.0rc6","1.2.0rc5","1.2.0rc4","1.2.0rc2","1.2.0rc1","1.1.0","1.1.0rc2","1.1.0rc1","1.0.0rc3","1.0.0rc2","1.0.0rc1","0.9.1","0.9.1rc5","0.9.1rc4","0.9.1rc3","0.9.1rc2","0.9.1rc1","0.9.0","0.9.0rc3","0.9.0rc2","0.9.0rc1","0.8.1","0.8.1rc5","0.8.1rc4","0.8.1rc3","0.8.1rc2","0.8.1rc1","0.8.0","0.8.0rc3","0.8.0rc2","0.8.0rc1","0.7.0","0.7.0rc5","0.7.0rc4","0.7.0rc3","0.7.0rc2","0.7.0rc1","0.6.0","0.6.0rc2","0.6.0rc1","0.5.2","0.5.1","0.5.0","0.5.0rc5","0.5.0rc4","0.5.0rc3","0.5.0rc2","0.5.0rc1","0.4.0","0.4.0rc2","0.4.0rc1","0.3.0","0.3.0rc4","0.3.0rc3","0.3.0rc2","0.3.0rc1","0.2.0","0.2.0rc3","0.2.0rc2","0.2.0rc1","0.1.0","0.1.0rc2","0.1.0rc1","0.1a1.dev9","0.1a1.dev8","0.1a1.dev7"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-100844.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"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"}]}