EUVD Vulnerability Catalog

EUVD-2026-75595

Severity: CRITICAL Base Score: 9.2 CVSS Version: 4.0

Vulnerability 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.

CVSS Vector Analysis

Below is the complete, human-readable breakdown of the CVSS metric string: 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

▪ Attack Vector (AV): Network

▪ Attack Complexity (AC): Low

▪ Attack Requirements (AT): Present

▪ Privileges Required (PR): None

▪ User Interaction (UI): None

▪ Vulnerability Confidentiality Impact (VC): High

▪ Vulnerability Integrity Impact (VI): High

▪ Vulnerability Availability Impact (VA): High

▪ Subsequent Confidentiality Impact (SC): Low

▪ Subsequent Integrity Impact (SI): Low

▪ Subsequent Availability Impact (SA): None

Affected Vendors & Systems

Vendor ConfigServer

Vendor WebPros

References & Advisory Links

https://support.cpanel.net/hc/en-us/articles/43387915588375-Security-CVE-2026-65638-CSF-Security-Release

Metadata Profile

Database Authority

European Union Agency for Cybersecurity (ENISA) EUVD

Assigner

hackerone

EPSS Probability

Known Aliases

CVE-2026-65638

Published On

2026-09-10

Last Updated

2026-09-10