What’s Vulnerable › Vulnerabilities
CVE-2026-65638
- Severity: critical (CVSS 9.2 v4.0)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 2.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-09-10 · updated 2026-09-10
- Weakness: CWE-78
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.
Affected products
- ConfigServer Security & Firewall: from 14.00
- WebPros ConfigServer Security & Firewall: from 14.00 before 16.30 — fixed in 16.30
How to fix
Upgrade to a fixed version: WebPros ConfigServer Security & Firewall 16.30. Check the vendor advisory for mitigations.
References
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