---
id: CVE-2026-87898
title: >-
  OS command injection in Plesk allows remote authenticated users to execute
  arbitrary code with root privileges.
summary: >-
  OS command injection in Plesk allows remote authenticated users to execute
  arbitrary code with root privileges.
severity: critical
cvss: 9.4
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H'
cwe:
  - CWE-78
vendor: WebPros
product: Plesk extension "Site Import"
affected:
  - plesk_extension_site_import >= 1.6.6 <= 1.12.1
published: '2026-09-23'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T21:16:28.120'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-87898'
references:
  - url: 'https://support.plesk.com/hc/en-us/articles/43641151026583'
    label: support@hackerone.com
tags:
  - nvd
  - cve.org
epss: 0.00946
epssPercentile: 0.59469
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-23T20:06:19.972843Z'
cvssSource: cna
ingestedAt: '2026-09-23T20:32:10.754Z'
---

## Overview

OS command injection in Plesk allows remote authenticated users to execute arbitrary code with root privileges.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.