VDB-396022 · CVE-2026-65642 · GCVE-0-2026-65642

WebPros Plesk up to 18.0.79.7/18.0.80.3 authorization

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.0	$0-$5k	0.91

Summaryinfo

A vulnerability was found in WebPros Plesk up to 18.0.79.7/18.0.80.3 and classified as critical. Affected by this vulnerability is an unknown functionality. Executing a manipulation can lead to authorization. This vulnerability is tracked as CVE-2026-65642. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability has been found in WebPros Plesk up to 18.0.79.7/18.0.80.3 and classified as critical. This vulnerability affects an unknown code. The manipulation with an unknown input leads to a authorization vulnerability. The CWE definition for the vulnerability is CWE-639. The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Insecure direct object reference in Plesk 18.0.79.7 and earlier or 18.0.80 through 18.0.80.3, allows remote authenticated users to read and modify other customers' databases.

The advisory is available at support.plesk.com. This vulnerability was named CVE-2026-65642 since 07/22/2026. The exploitation appears to be easy. The attack can be initiated remotely. The technical details are unknown and an exploit is not available.

Upgrading to version 18.0.80.4 eliminates this vulnerability.

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Productinfo

Type

Hosting Control Software

Vendor

WebPros

Name

Plesk

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Authorization
CWE: CWE-639 / CWE-285 / CWE-266
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Plesk 18.0.80.4

Timelineinfo

07/22/2026 CVE reserved
08/26/2026 +35 days VulDB entry created
08/27/2026 +0 days Advisory disclosed
08/27/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: support.plesk.com
Status: Confirmed

CVE: CVE-2026-65642 (🔒)
GCVE (CVE): GCVE-0-2026-65642
GCVE (VulDB): GCVE-100-396022

Entryinfo

Created: 08/27/2026 00:17
Changes: 08/27/2026 00:17 (66)
Complete: 🔍
Cache ID: 216::103