Ctrlpanel-gg panel up to 1.1.x os command injection

Summaryinfo

A vulnerability classified as critical has been found in Ctrlpanel-gg panel up to 1.1.x. This vulnerability affects unknown code. This manipulation causes os command injection. This vulnerability is handled as CVE-2026-34234. The attack can be initiated remotely. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Ctrlpanel-gg panel up to 1.1.x. It has been declared as critical. Affected by this vulnerability is some unknown processing. The manipulation with an unknown input leads to a os command injection vulnerability. The CWE definition for the vulnerability is CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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.

The advisory is shared at github.com. This vulnerability is known as CVE-2026-34234 since 03/26/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1202 for this issue.

Upgrading to version 1.2.0 eliminates this vulnerability. The upgrade is hosted for download at github.com.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-30984). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

• Ctrlpanel-gg

Name

• panel

Version

• 1.0
• 1.1

Website

• Product: https://github.com/Ctrlpanel-gg/panel/

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If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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