CVE-2025-66431: Plesk

High severity, CVSS 7.8. EPSS: 0.3% chance of exploitation in the next 30 days.

WebPros Plesk before 18.0.73.5 and 18.0.74 before 18.0.74.2 on Linux allows remote authenticated users to execute arbitrary code as root via domain creation. The attacker needs "Create and manage sites" with "Domains management" and "Subdomains management."

Affected products

• Plesk Plesk: before 18.0.73.5 (fixed in 18.0.73.5); from 18.0.74, before 18.0.74.2 (fixed in 18.0.74.2)

Published 2025-12-03. Last modified 2026-06-17.