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9.3

Plesk Customer Can Run Malicious Code on Database Server

CVE-2026-64639 · published 2 months ago
Summary

A Plesk customer with limited access can potentially run unauthorized code on the database server. This is a concern because malicious code can damage data or disrupt service. To protect your Plesk server, update to the latest version of Plesk 18.0.

What to do
  • Update webpros plesk to version 18.0.79.6 or later.
Affected software
VendorProductAffected versions
webpros plesk < 18.0.79.6
Original advisory text
Incorrect database cloning process in Plesk from 18.0.52 before 18.0.79.6 and 18.0.80.2 allows a low-privileged user (customer, reseller) to execute arbitrary code on behalf of the database server ...
Incorrect database cloning process in Plesk from 18.0.52 before 18.0.79.6 and 18.0.80.2 allows a low-privileged user (customer, reseller) to execute arbitrary code on behalf of the database server administrator.
References
Fix within
Internet-facing 14 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit
  • Gives an attacker full control
Severity
9.3 Critical
Exploitation
<1% chance of attack within 30 days
Type
CWE-266Incorrect Privilege Assignment
Timeline
Published12 Aug 2026
Updated4 Nov 2026
First seen12 Aug 2026
Sources
CVE-2026-64639 · NVD
CVE-2026-64639 · MITRE
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