CVE-2026-64637 | BDVDB-2026-356356 Detail

WebProsPlesk

Description#

Improper privilege management in the XML-RPC API of Plesk before 18.0.80, allows an authenticated reseller to obtain an administrative session for the root user account.

Impact#

Per CVSS v3.0: confidentiality impact high, integrity impact high, availability impact high. Attack vector: network.

Weaknesses#

CWE-269 Improper Privilege Management

References#

https://support.plesk.com/hc/en-us/articles/42432168683799

Exploit#

No public exploit known

History#

Version 12026-08-07Record published in the CVE List.

Published

Published: 2026-08-07
Last modified: 2026-08-07

Vendor information

Vendor: WebPros
Product: Plesk

All WebPros vulnerabilities

Score

9.9 Critical

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 41.1.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Privilege Escalation

Action

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

Affected Systems

Vulnerable
< 18.0.80.1
Fixed
18.0.80.1

Scoring System

CVSS v4.0

Not available

CVSS v3.1

Not available

CVSS v3.0

9.9 Critical

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Privileges Required	Low
User Interaction	None
Scope	Changed
Confidentiality	High
Integrity	High
Availability	High

CVSS v2

Not available

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