OS Command Injection through API endpoint

Summary

An Improper Neutralization of Special Elements used in an OS Command ('OS command injection') vulnerability [CWE-78] in FortiSandbox may allow an unauthenticated attacker to execute unauthorized code or commands via crafted HTTP requests.

Version Affected Solution
FortiSandbox 5.0 Not affected Not Applicable
FortiSandbox 4.4 4.4.0 through 4.4.8 Upgrade to 4.4.9 or above

FortiSanbox PaaS 5.0 is not impacted by the issue and hence customers do not need to perform any action.

Acknowledgement

Fortinet is pleased to thank Samuel de Lucas Maroto from KPMG Spain for reporting this vulnerability under responsible disclosure.

Timeline

2026-04-14: Initial publication