CVE-2026-64639 | BDVDB-2026-358378 Detail

WebProsPlesk

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.

Impact#

Per CVSS v4.0: confidentiality impact high, integrity impact high, availability impact high. Attack vector: network.

Weaknesses#

CWE-266 Incorrect Privilege Assignment

References#

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

Exploit#

No public exploit known

History#

Version 12026-08-12Record published in the CVE List.
Version 22026-08-14Most recent update recorded in the CVE List.

Published

Published: 2026-08-12
Last modified: 2026-08-14

Vendor information

Vendor: WebPros
Product: Plesk

All WebPros vulnerabilities

Score

9.3 Critical

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 46.5.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Not classified

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
>= 18.0.52 and < 18.0.79.6
Fixed
18.0.79.6
Vulnerable
>= 18.0.80.0 and < 18.0.80.2
Fixed
18.0.80.2

Scoring System

CVSS v4.0

9.3 Critical

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

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Attack Requirements	None
Privileges Required	None
User Interaction	None
Vulnerable System Confidentiality	High
Vulnerable System Integrity	High
Vulnerable System Availability	High
Subsequent System Confidentiality	None
Subsequent System Integrity	None
Subsequent System Availability	None

CVSS v3.1

Not available

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).