Quick answers
- Is CVE-2026-34234 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-34234 being exploited in the wild.
- How severe is CVE-2026-34234?
- Critical severity, with a CVSS score of 10, published 19 May 2026.
- Which products and versions are affected?
- CtrlPanel-gg CtrlPanel <= 1.1.1.
- Is there a fix for CVE-2026-34234?
- A patch was published on 2026-04-24: Fixed in version 1.2.0 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-34234 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-34234?
- Check whether you run CtrlPanel-gg CtrlPanel at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A remote code execution vulnerability exists in CtrlPanel's web-based installer (public/installer/index.php) due to a flawed order of operations and improper input sanitization. The application performs the 'install.lock' check only after including and executing form handler files, allowing unauthenticated attackers to access installer endpoints even on fully deployed systems. Furthermore, the SMTP form handler (src/forms/smtp.php) interpolates unsanitized user input directly into shell commands executed via proc_open. An attacker can use shell metacharacters to break out of the intended command context and execute arbitrary OS commands with the privileges of the web server. This vulnerability is reported to be actively exploited in the wild.
Affected products
- CtrlPanel-gg CtrlPanel <= 1.1.1
Timeline
- 2026-04-24: patched: Fixed in version 1.2.0
- 2026-05-08: advisory: GitHub Security Advisory GHSA-jmhr-q9q5-fqwh published
- 2026-05-19: disclosed: CVE-2026-34234 published to NVD