CVE-2026-34234— CtrlPanel: Unauthenticated RCE using installer script
Possible ATT&CK Techniques 2AI
T1059 · Command and Scripting Interpreter T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| 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: NVD (National Vulnerability Database)
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: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
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: NVD (National Vulnerability Database)
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 |
|---|
AI-Generated POCPremium
Qwen3.6-35B-A3B · 10238 chars
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III. Intelligence Information for CVE-2026-34234
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- https://github.com/Ctrlpanel-gg/panel/releases/tag/1.2.0x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2026-34234
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
- CVE-2026-34358
CtrlPanel: Missing Authorization on Admin Write Endpoints Al - CVE-2026-34246
CtrlPanel: Stored XSS in Admin Role Management via Unescaped - CVE-2026-34241
CtrlPanel: Stored XSS in Ticket Reply Notifications Allows S - CVE-2026-34233
CtrlPanel has Missing Authentication Checks in Datatable Adm - CVE-2026-34216
CtrlPanel: Authenticated Remote Code Execution via Dynamic C
Same vendor: Ctrlpanel-gg
- CVE-2026-34358
CtrlPanel: Missing Authorization on Admin Write Endpoints Al - CVE-2026-34246
CtrlPanel: Stored XSS in Admin Role Management via Unescaped - CVE-2026-34241
CtrlPanel: Stored XSS in Ticket Reply Notifications Allows S - CVE-2026-34233
CtrlPanel has Missing Authentication Checks in Datatable Adm - CVE-2026-34216
CtrlPanel: Authenticated Remote Code Execution via Dynamic C
Same weakness: CWE-78
V. Comments for CVE-2026-34234
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