Description
OS command injection in Plesk allows remote authenticated users to execute arbitrary code with root privileges.
Published: 2026-09-23
Score: 9.4 Critical
EPSS: 1.0% Low
KEV: No
Impact: Remote Code Execution
Action: Immediate Patch
AI Analysis

Impact

An OS command injection flaw exists in the Plesk extension "Site Import" that permits a remote authenticated user to run arbitrary commands with root privileges. The vulnerability allows attackers to gain full control over the affected server, compromising confidentiality, integrity, and availability. This weakness corresponds to CWE-78.

Affected Systems

The flaw impacts WebPros Plesk installations that include the "Site Import" extension. No specific version information is provided, so all installations of the extension when the vulnerability is present are at risk until a patch is applied.

Risk and Exploitability

The CVSS base score of 9.4 marks the issue as critical. With a lack of EPSS data, the historical exploitation probability cannot be quantified, but the vulnerability is listed as not part of the CISA KEV catalog. Remote attackers must be authenticated to exploit it, indicating that only users with legitimate access to the Site Import feature can launch the attack.

Generated by OpenCVE AI on September 23, 2026 at 21:40 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Upgrade the Plesk Site Import extension to the latest version provided by WebPros
  • Limit the Site Import feature to trusted users only by reviewing role permissions in Plesk
  • Audit and apply least privilege principles to all Plesk users, ensuring no unnecessary admin rights are granted

Generated by OpenCVE AI on September 23, 2026 at 21:40 UTC.

Tracking

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Advisories

No advisories yet.

History

Thu, 24 Sep 2026 09:15:00 +0000

Type Values Removed Values Added
First Time appeared Webpros
Webpros plesk Site Import
Vendors & Products Webpros
Webpros plesk Site Import

Wed, 23 Sep 2026 22:00:00 +0000

Type Values Removed Values Added
Title OS Command Injection Allowing Remote Authenticated Users to Execute Code with Root Privileges

Wed, 23 Sep 2026 20:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 23 Sep 2026 20:00:00 +0000

Type Values Removed Values Added
Description OS command injection in Plesk allows remote authenticated users to execute arbitrary code with root privileges.
Weaknesses CWE-78
References
Metrics cvssV4_0

{'score': 9.4, 'vector': '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'}


Subscriptions

Webpros Plesk Site Import
cve-icon MITRE

Status: PUBLISHED

Assigner: hackerone

Published:

Updated: 2026-09-23T20:06:28.175Z

Reserved: 2026-09-09T15:00:00.573Z

Link: CVE-2026-87898

cve-icon Vulnrichment

Updated: 2026-09-23T20:06:23.783Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-23T20:17:20.340

Modified: 2026-09-24T21:16:28.120

Link: CVE-2026-87898

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-24T09:00:12Z

Weaknesses
  • CWE-78

    Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')