CVE-2026-64639Network attack vector

Authenticated code execution via database cloning

Published Aug 12, 2026 · Updated Aug 12, 2026

Incorrect privilege assignment in Plesk 18.0.52 through 18.0.79.5 and 18.0.80 through 18.0.80.1 allows remote authenticated users to execute code. The database cloning process grants database server administrator authority during a clone or copy operation; Plesk has not disclosed the faulty code path or input handling. A customer or reseller account allowed to clone or copy a database is required, and exploitation crosses the hosting-tenant privilege boundary.

CVSS severity9.3
Critical
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Incorrect privilege assignment in Plesk 18.0.52 through 18.0.79.5 and 18.0.80 through 18.0.80.1 allows remote authenticated users to execute code. The database cloning process grants database server administrator authority during a clone or copy operation; Plesk has not disclosed the faulty code path or input handling. A customer or reseller account allowed to clone or copy a database is required, and exploitation crosses the hosting-tenant privilege boundary.

The record

CVE
CVE-2026-64639
Published
Aug 12, 2026
Updated
Aug 12, 2026
Vendor
WebPros
Product
Plesk
Classifications
CWE-266, T1068
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 12, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 12, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=18.0.52 <18.0.79.6
  2. Affected versionversion=18.0.80.0 <18.0.80.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

WebPros · Pleskversion=18.0.52 <18.0.79.6; version=18.0.80.0 <18.0.80.2

Published CVSS scores

9.3HackerOneCVSS: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 describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-266Incorrect Privilege Assignment
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo