CtrlPanel: Unauthenticated RCE using installer script
70Vexday Risk Score
Prioritize patching. It exploitation observed by VulnCheck and has a public proof of concept.
ssvc Actcvss 10epss 0.8%
from disclosure to weapon16 days
Published on NVDMay 19
1st PoC+16d
VulnCheckMay 19
exploitation probability
0.8%top 45% of all CVEs
observed exploitation
yesVulnCheck
2 public exploit(s)
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Affected products
Ctrlpanel-gg · panelpublic PoCs found — 2
githubgithub.com/rootdirective-sec/CVE-2026-34234-Lab★ 0vulncheckvulncheck.com/xdb/bb5aef6d09d6unverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.