OS Command Injection in Plesk Affects Remote Users
CVE-2026-87898

9.4CRITICAL

Key Information:

Vendor

Webpros

Status
Plesk Extension "site Import"
Vendor
CVE Published:
23 September 2026

What is CVE-2026-87898?

A vulnerability in Plesk allows remote authenticated users to exploit OS command injection, enabling them to execute arbitrary code with elevated privileges. This security flaw potentially exposes sensitive server data and may lead to unauthorized access, making timely updates and patches essential for protecting user environments.

Affected Version(s)

Plesk extension "Site Import" 1.6.6 <= 1.12.1

Plesk extension "Site Import" 1.12.2

References

https://support.plesk.com/hc/en-us/articles/43641151026583

CVSS V4

Score:
9.4
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Ali Mustafa (rz1027)
.