CVE-2026-64637

CRITICAL CVSS 3.0: 9.9
Updated Aug 07, 2026
Webpros
Parameter Value
CVSS 9.9 (CRITICAL)
Affected Versions before 18.0.80
Type CWE-269 (Improper Privilege Management)
Vendor Webpros
Public PoC No

Improper privilege management in the XML-RPC API of Plesk before 18.0.80, allows an authenticated reseller to obtain an administrative session for the root user account.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v3.0

Vulnerable Products

webpros:plesk