{"id":"CVE-2021-42561","details":"An issue was discovered in CALDERA 2.8.1. When activated, the Human plugin passes the unsanitized name parameter to a python \"os.system\" function. This allows attackers to use shell metacharacters (e.g., backticks \"``\" or dollar parenthesis \"$()\" ) in order to escape the current command and execute arbitrary shell commands.","modified":"2026-03-14T11:15:19.136011Z","published":"2022-01-12T19:15:08.330Z","references":[{"type":"ADVISORY","url":"https://github.com/mitre/caldera/releases"},{"type":"EVIDENCE","url":"https://github.com/DrunkenShells/Disclosures/tree/master/CVE-2021-42561-Command%20Injection%20Via%20the%20Human%20Plugin-MITRE%20Caldera"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/mitre/caldera","events":[{"introduced":"0"},{"last_affected":"29b1f26239ca1819c110cdab96de22938ce01450"}],"database_specific":{"versions":[{"introduced":"0"},{"last_affected":"2.8.1"}]}}],"versions":["2.0.0","2.1.0","2.3.0","2.3.1","2.6.0","2.6.1","2.6.2","2.6.3","2.6.4","2.6.5","2.6.6","2.6.64","2.6.65","2.7.0","2.8.0","2.8.1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-42561.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}