{"id":"CVE-2021-42561","aliases":["EUVD-2021-29529","GHSA-3893-j6q6-whq8"],"status":"published","title":"An issue was discovered in CALDERA 2.8.1. When activated, the Human plugin passes the unsanitized...","description":"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 \"$()\" ) in order to escape the current command and execute arbitrary shell commands.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.19572,"percentile":0.97418,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-74","CWE-88"],"published":"2022-01-12T18:52:40Z","modified":"2026-10-20T10:55:00Z","exploits":[{"source":"pocgithub","id":"mbadanoiu/CVE-2021-42561","title":"mbadanoiu/CVE-2021-42561","date":"2024-06-09","url":"https://github.com/mbadanoiu/CVE-2021-42561"}],"products":[{"vendor":"mitre","product":"caldera"}],"references":[{"url":"https://github.com/mitre/caldera/releases","tags":["x_refsource_MISC","x_transferred","Release Notes","Third Party Advisory","advisory"]},{"url":"https://github.com/DrunkenShells/Disclosures/tree/master/CVE-2021-42561-Command%20Injection%20Via%20the%20Human%20Plugin-MITRE%20Caldera","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-42561"},{"url":"https://github.com/advisories/GHSA-3893-j6q6-whq8"}],"sources":{"cve":[{"id":"CVE-2021-42561","description":"An issue was discovered in CALDERA 2.8.1. When activated, the Human plugin passes the unsanitized name parameter to a python \"os.system\" function. This allows attackers to use shell metacharacters (e.g., backticks \"``\" or dollar parenthesis \"$()\" ) in order to escape the current command and execute arbitrary shell commands.","status":"published","published":"2022-01-12T18:52:40Z","modified":"2024-08-04T03:38:49.692Z","updated_at":"2026-11-02T14:32:58.739039Z"}],"euvd":[{"id":"EUVD-2021-29529","description":"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 \"$()\" ) in order to escape the current command and execute arbitrary shell commands.","status":"published","published":"2022-01-12T18:52:40Z","modified":"2024-08-04T03:38:49Z","updated_at":"2026-11-03T03:24:15.755984Z"}],"ghsa":[{"id":"GHSA-3893-j6q6-whq8","title":"An issue was discovered in CALDERA 2.8.1. When activated, the Human plugin passes the unsanitized...","description":"An issue was discovered in CALDERA 2.8.1. When activated, the Human plugin passes the unsanitized name parameter to a python \"os.system\" function. This allows attackers to use shell metacharacters (e.g., backticks \"``\" or dollar parenthesis \"$()\" ) in order to escape the current command and execute arbitrary shell commands.","status":"published","published":"2022-01-13T00:01:08Z","modified":"2023-01-27T05:01:58Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-88"],"updated_at":"2026-11-02T14:41:59.85242Z"}],"nvd":[{"id":"CVE-2021-42561","description":"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 \"$()\" ) in order to escape the current command and execute arbitrary shell commands.","status":"published","published":"2022-01-12T19:15:08.33Z","modified":"2026-06-17T04:09:50.017Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":9,"vector":"AV:N/AC:L/Au:S/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-74"],"updated_at":"2026-11-02T14:07:03.418194Z"}],"osv":[{"id":"CVE-2021-42561","description":"An issue was discovered in CALDERA 2.8.1. When activated, the Human plugin passes the unsanitized name parameter to a python \"os.system\" function. This allows attackers to use shell metacharacters (e.g., backticks \"``\" or dollar parenthesis \"$()\" ) in order to escape the current command and execute arbitrary shell commands.","status":"published","published":"2022-01-12T19:15:08.33Z","modified":"2026-10-20T10:55:00.826807515Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:21.557945Z"}]}}