Paper/Archive/CVE-2026-67402

CVE-2026-67402

WebPros ConfigServer Security & Firewall — An insecure Apache configuration in ConfigServer Security & Firewall maps /usr/bin as CGI programs through the Messenger v3 HTTPS virtual…

EPSS 0.5%CVSS 9.2

critical.is priorityof 100

CVSS 9.2 (CNA)9.2 / 10 × 3027.6 Not in CISA KEV+300.0 EPSS percentile 45.7.457 × 209.1 No public exploit+100.0 SSVC exploitation: none+100.0

Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource

ConfigServer Security & Firewall14.02 – < 16.3116.31CNA

ConfigServer Security & Firewall14.02–CNA

Scores by source

hackerone (CNA)9.2CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:N

CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refsupport.cpanel.net/hc/en-us/articles/43171958716439-Security-CSF-Security-Release-September-3rd-2026