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CVE-2026-65638

ConfigServer Security & Firewall · command injection

CVSS 4.0 9.2 CRITICALCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-65638

Published

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.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-65638

Published

ConfigServer Security & Firewall

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "defaultStatus": "unaffected",
                    "vendor": "WebPros",
                    "product": "ConfigServer Security & Firewall",
                    "versions": [
                        {
                            "version": "14.00",
                            "status": "affected",
                            "lessThan": "16.30",
                            "versionType": "semver"
                        }
                    ]
                }

ConfigServer Security & Firewall

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "defaultStatus": "unaffected",
                    "vendor": "ConfigServer",
                    "product": "ConfigServer Security & Firewall",
                    "versions": [
                        {
                            "version": "14.00",
                            "status": "affected",
                            "lessThan": "*",
                            "versionType": "semver"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON