Improper escaping of a request URL in ConfigServer Security & Firewall allows an unauthenticated remote attacker to execute arbitrary commands as the CSF service account via shell command injection.

The vulnerability affects versions of the software originally distributed by ConfigServer, as well as versions of the WebPros-maintained fork that contain the vulnerable code. WebPros has addressed the vulnerability in version 16.30. Other forks or independently maintained versions of ConfigServer Security & Firewall (CSF) may also be affected and should be evaluated independently.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements Present

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact Low

Subsequent System Integrity Impact Low

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact total

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
WebPros ConfigServer Security & Firewall unaffected
Version Status Constraints
14.00 affected < 16.30
ConfigServer ConfigServer Security & Firewall unaffected
Version Status Constraints
14.00 affected < *

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Project Subscriptions

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://support.cpanel.net/hc/en-us/articles/43387915588375-Security-CVE-2026-65638-CSF-Security-Release cve-icon cve-icon
History

Thu, 10 Sep 2026 22:15:00 +0000

Type Values Removed Values Added
Title Unauthenticated Remote Command Execution via CSF Web Interface

Thu, 10 Sep 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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

Thu, 10 Sep 2026 19:00:00 +0000

Type Values Removed Values Added
Title Unauthenticated Remote Command Execution via CSF Web Interface

Thu, 10 Sep 2026 16:45:00 +0000

Type Values Removed Values Added
Description Improper escaping of a request URL in ConfigServer Security & Firewall allows an unauthenticated remote attacker to execute arbitrary commands as the CSF service account via shell command injection. The vulnerability affects versions of the software originally distributed by ConfigServer, as well as versions of the WebPros-maintained fork that contain the vulnerable code. WebPros has addressed the vulnerability in version 16.30. Other forks or independently maintained versions of ConfigServer Security & Firewall (CSF) may also be affected and should be evaluated independently.
Weaknesses CWE-78
References
Metrics cvssV4_0

{'score': 9.2, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: hackerone

Published:

Updated: 2026-09-10T18:19:18.373Z

Reserved: 2026-07-22T15:00:06.103Z

Link: CVE-2026-65638

cve-icon Vulnrichment

Updated: 2026-09-10T18:19:15.379Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-10T17:17:05.063

Modified: 2026-09-10T19:54:25.810

Link: CVE-2026-65638

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-10T22:00:20Z

Weaknesses