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CVE-2026-34234— CtrlPanel: Unauthenticated RCE using installer script

Quick assessment

Affected
Ctrlpanel-gg panel
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

CtrlPanel.gg是CtrlPanel.gg开源的一款主机服务计费管理工具。 CtrlPanel.gg 1.1.1及之前版本存在操作系统命令注入漏洞，该漏洞源于Web安装程序在包含并执行表单处理文件后才进行install.lock检查，且未对用户输入进行清理直接传递给shell命令，可能导致未经身份验证的远程代码执行。以下版本受到影响：1.1.1及之前版本。

CVSS 10.0 · Critical EPSS 0.82% · P54

Affected Version Matrix 1

VendorProduct Version RangeStatus
Ctrlpanel-gg panel < 1.2.0 affected
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I. Basic Information for CVE-2026-34234

Vulnerability Information
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Vulnerability Title
CtrlPanel: Unauthenticated RCE using installer script
Source: CVE Program / CVE List V5
Vulnerability Description
CtrlPanel is open-source billing software for hosting providers. In versions 1.1.1 and prior, the web-based installer (public/installer/index.php) is vulnerable to unauthenticated Remote Code Execution (RCE) because it performs the install.lock check only after including and executing form handler files, leaving installer endpoints reachable on already-installed instances. The handlers also pass unsanitized user input directly into shell commands, allowing an attacker to submit crafted requests that execute arbitrary commands on the server. The vulnerability stems from two combined weaknesses: (1) premature form handler execution before the lock file gate, and (2) unsafe use of user input in shell command construction. This issue is reported to be actively exploited in the wild. The issue has been fixed in version 1.2.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
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
Vulnerability Title
CtrlPanel.gg 操作系统命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
CtrlPanel.gg是CtrlPanel.gg开源的一款主机服务计费管理工具。 CtrlPanel.gg 1.1.1及之前版本存在操作系统命令注入漏洞，该漏洞源于Web安装程序在包含并执行表单处理文件后才进行install.lock检查，且未对用户输入进行清理直接传递给shell命令，可能导致未经身份验证的远程代码执行。以下版本受到影响：1.1.1及之前版本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Ctrlpanel-gg panel < 1.2.0 -

II. Public POCs for CVE-2026-34234

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 10363 chars
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Exploit chain & mitigation
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III. Intelligence Information for CVE-2026-34234

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Vendor Advisories for CVE-2026-34234 (1)

Other References for CVE-2026-34234 (1)

Same Patch Batch · Ctrlpanel-gg · 2026-05-19 · 6 CVEs total

CVE-2026-34241 8.7 HIGH CtrlPanel: Stored XSS in Ticket Reply Notifications Allows Session Hijacking
CVE-2026-34358 8.1 HIGH CtrlPanel: Missing Authorization on Admin Write Endpoints Allows RBAC Bypass
CVE-2026-34216 6.6 MEDIUM CtrlPanel: Authenticated Remote Code Execution via Dynamic Class Instantiation in Settings
CVE-2026-34233 6.5 MEDIUM CtrlPanel has Missing Authentication Checks in Datatable Admin Endpoints
CVE-2026-34246 4.8 MEDIUM CtrlPanel: Stored XSS in Admin Role Management via Unescaped DataTable HTML Output

IV. Related Vulnerabilities

Same product: panel
Same vendor: Ctrlpanel-gg
Same weakness: CWE-78

V. Comments for CVE-2026-34234

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