Improper Preservation of Permissions
Plesk CMS 18.0.37 is affected by an insecure permissions vulnerability that allows privilege Escalation from user to admin rights. OTE: the vendor states that this is only a site-specific problem on websites of one or more Plesk users
CWE-281 - Improper Preservation of Permissions
The software does not preserve permissions or incorrectly preserves permissions when copying, restoring, or sharing objects, which can cause them to have less restrictive permissions than intended.