OS command injection in WebPros ConfigServer Security & Firewall
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- Present
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-78.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| WebPros | ConfigServer Security & Firewall | 14.00 to before 16.30 | 16.30 | Patch available | CNA |
| ConfigServer | ConfigServer Security & Firewall | 14.00 and later | — | No fix listed | CNA |
- ConfigServer Security & Firewall VendorWebPros Affected 14.00 to before 16.30 Fixed in 16.30 Patch available CNA
- ConfigServer Security & Firewall VendorConfigServer Affected 14.00 and later Fixed in — No fix listed CNA
Remediation
- Fix · CNA ConfigServer Security & Firewall (WebPros) Fixed in 16.30
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
WebPros ConfigServer Security & Firewall 16.30
2 records Highest priority Priority MEDIUM 2 MEDIUM
Other records, highest priority first
- TI-2026-46788 OS command injection in WebPros ConfigServer Security & FirewallPriority MEDIUM 46
Timeline
- 2026-10-02 Threatist record created from CVE-2026-65638
- 2026-10-03 Alias added: GHSA-8qv3-jfg8-cjvp
References
More WebPros vulnerabilities
- TI-2026-30342 WebPros cPanel and WHM Authentication Bypass via Login Flow KEVCVSS 4.0CRITICAL 9.3
- TI-2026-46792 Eval injection in cPanel 11.138.0.0 and earlier allows remote authenticated users to execute arbitrary code as root. CVSS 4.0HIGH 8.7
- TI-2025-40383 Plesk Obsidian versions 8.0.1 through 18.0.73 are vulnerable to a Denial of Service (DoS)… CVSS 3.1HIGH 7.5
- TI-2026-23322 Incorrect privileges management and insufficient path filtering allow to read arbitrary… CVSS 3.1HIGH 8.6
- TI-2026-47685 Deserialization of untrusted data in WebPros WHMCS CVSS 4.0CRITICAL 9.3
- TI-2026-23317 Authorization bypass in WebPros Comet Backup CVSS 4.0CRITICAL 9.9
Sources
- CVE-2026-65638 · CVE Program
- CVE-2026-65638 · NVD
- FIRST EPSS
- GHSA-8qv3-jfg8-cjvp · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences