CVE-2026-64637
Critical
Description
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.
SeverityCritical
CVSS9.9
Exploit probability—
Product
Plesk
PublishedAug 7, 2026
First seenAug 7, 2026
Weakness typeCWE-269Improper privilege management
How to fix
Update
- WebPros Plesk18.0.80.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| WebPros Plesk | v < 18.0.80.1 | 18.0.80.1 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.