An insecure Apache configuration in ConfigServer Security & Firewall maps /usr/bin as CGI programs through the Messenger v3 HTTPS virtual host. A remote unauthenticated attacker whose address is blocked can request a mapped executable and run arbitrary commands as the Apache user. The vulnerability affects installations where CSF Messenger v3 and its HTTPS mode are enabled. WebPros addressed the vulnerability in version 16.31.
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.


Workaround

Disable Messenger v3 by setting MESSENGERV3 = "0" until version 16.31 can be installed. This is the shipped default.

History

Fri, 04 Sep 2026 00:00:00 +0000

Type Values Removed Values Added
Description An insecure Apache configuration in ConfigServer Security & Firewall maps /usr/bin as CGI programs through the Messenger v3 HTTPS virtual host. A remote unauthenticated attacker whose address is blocked can request a mapped executable and run arbitrary commands as the Apache user. The vulnerability affects installations where CSF Messenger v3 and its HTTPS mode are enabled. WebPros addressed the vulnerability in version 16.31.
Weaknesses CWE-552
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: 2026-09-03T23:57:15.878Z

Reserved: 2026-07-29T15:00:02.294Z

Link: CVE-2026-67402

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-04T00:17:13.690

Modified: 2026-09-04T00:17:13.690

Link: CVE-2026-67402

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses