A improper limitation of a pathname to a restricted directory ('path traversal') in Fortinet FortiSandbox version 4.4.0 and 4.2.0 through 4.2.5 and 4.0.0 through 4.0.3 and 3.2.0 through 3.2.4 and 2.5.0 through 2.5.2 and 2.4.1 and 2.4.0 allows attacker to denial of service via crafted http requests.