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CVE-2026-65638

Quick assessment

Affected
WebPros ConfigServer Security & Firewall
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

ConfigServer 安全与防火墙（CSF）中，由于请求 URL 的转义处理不当，未经身份验证的远程攻击者可通过 shell 命令注入漏洞，以 CSF 服务账户的身份执行任意命令。 该漏洞影响由 ConfigServer 原始分发的软件版本，以及包含易受攻击代码的、由 WebPros 维护的分支版本。WebPros 已在 16.30 版本中修复了此漏洞。其他分支或独立维护的 ConfigServer 安全与防火墙（CSF）版本也可能受到影响，应单独进行评估。

CVSS 9.2 · Critical
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I. Basic Information for CVE-2026-65638

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
WebPros ConfigServer Security & Firewall 14.00 ~ 16.30 -
ConfigServer ConfigServer Security & Firewall 14.00 ~ * -

II. Public POCs for CVE-2026-65638

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-65638

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Other References for CVE-2026-65638 (1)

Same Patch Batch · WebPros · 2026-09-10 · 4 CVEs total

CVE-2026-65639 9.5 CRITICAL ConfigServer Security & Firewall 16.30以下OS命令注入
CVE-2026-68488 Plesk 竞争条件致本地提权
CVE-2026-68487 Plesk Backup Manager 路径遍历致root任意文件写入

IV. Related Vulnerabilities

Same product: ConfigServer Security & Firewall
Same vendor: WebPros
Same weakness: CWE-78

V. Comments for CVE-2026-65638

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