CVE-2026-64639 PUBLISHED

Assigner: hackerone
Reserved: 20.07.2026 Published: 12.08.2026 Updated: 12.08.2026

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.

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS Score: 9.3

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	None
Attack Complexity	Low	Integrity	High	Integrity	None
Attack Requirements	None	Availability	High	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

Product Status

Vendor	WebPros
Product	Plesk
Versions	Default: unaffected affected from 18.0.52 to 18.0.79.6 (excl.) affected from 18.0.80.0 to 18.0.80.2 (excl.)

Credits

Aziz Knani finder

References

https://support.plesk.com/hc/en-us/articles/42521305418903-Vulnerability-CVE-2026-64639-Privilege-Escalation-via-Database-Cloning-in-Plesk

Problem Types

CWE-266 Incorrect Privilege Assignment CWE