CVE-2026-65639 — WebPros / ConfigServer Security & Firewall

Description (CNA)

OS command injection in the advanced-rule parser of ConfigServer Security & Firewall allows a remote attacker who controls a configured allow/deny feed to execute arbitrary commands as root, due to insufficient validation of feed-supplied rule data. 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.

Affected (CNA)

Vendor / product	Versions
WebPros / ConfigServer Security & Firewall	affected 2.15 before 16.30
ConfigServer / ConfigServer Security & Firewall	affected 2.15 before *

CWE

CWE-78

References

https://support.cpanel.net/hc/en-us/articles/43387923160343-Security-CVE-2026-65639-CSF-Security-Release

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.