CVE-2026-64639 Privilege escalation in Plesk
A low-privileged user can execute arbitrary code as the database administrator due to an incorrect database cloning process in Plesk.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-64639?
CVE-2026-64639 is a critical vulnerability in WebPros Plesk, published on 12 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-266
Which versions are affected by CVE-2026-64639?
How do I fix CVE-2026-64639?
No fix has been published for CVE-2026-64639 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-64639 being exploited?
There is no known exploitation of CVE-2026-64639 in the wild and no public exploit code.
Sources
Also known as GHSA-jcvh-gm3c-qh9q.