CVE-2021-42561

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.

• CWE-74

• https://github.com/DrunkenShells/Disclosures/tree/master/CVE-2021-42561-Command%20Injection%20Via%20the%20Human%20Plugin-MITRE%20CalderaExploit, Third Party Advisory
• https://github.com/mitre/caldera/releasesRelease Notes, Third Party Advisory
• https://github.com/DrunkenShells/Disclosures/tree/master/CVE-2021-42561-Command%20Injection%20Via%20the%20Human%20Plugin-MITRE%20CalderaExploit, Third Party Advisory
• https://github.com/mitre/caldera/releasesRelease Notes, Third Party Advisory

Published

Jan 12, 2022

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2021-42556Rasa X before 0.42.4 allows Directory Traversal during archi…5.5
• CVE-2021-42557In Jeedom through 4.1.19, a bug allows a remote attacker to …7.5
• CVE-2021-42558An issue was discovered in CALDERA 2.8.1. It contains multip…6.1
• CVE-2021-42559An issue was discovered in CALDERA 2.8.1. It contains multip…8.8
• CVE-2021-4256A vulnerability was found in ctrlo lenio. It has been classi…6.1
• CVE-2021-42560An issue was discovered in CALDERA 2.9.0. The Debrief plugin…8.8
• CVE-2021-42562An issue was discovered in CALDERA 2.8.1. It does not proper…8.1
• CVE-2021-42563There is an Unquoted Service Path in NI Service Locator (nis…7.8
• CVE-2021-42564An open redirect through HTML injection in confidential mess…5.4
• CVE-2021-42565myfactory.FMS before 7.1-912 allows XSS via the UID paramete…6.1
• CVE-2021-42566myfactory.FMS before 7.1-912 allows XSS via the Error parame…6.1
• CVE-2021-42567Apereo CAS through 6.4.1 allows XSS via POST requests sent t…6.1