CVE-2026-33765: Pi-hole Admin Interface is a web interface for managing Pi-hole, a network-level ad and internet tracker blocking…
CVE-2026-33765 · Severity: critical · CVSS 9.8 · Published 2026-03-27
Pi-hole Admin Interface is a web interface for managing Pi-hole, a network-level ad and internet tracker blocking application. Versions prior to 6.0 have a critical OS Command Injection vulnerability in the savesettings.php file. The application takes the user-controlled $_POST['webtheme'] parameter and concatenates it directly into a system command executed via PHP's exec() function. Since the input is neither sanitized nor validated before being passed to the shell, an attacker can append arbitrary system commands to the intended pihole command. Furthermore, because the command is executed with sudo privileges, the injected commands will run with elevated (likely root) privileges. Version 6.0 patches the issue.
No. Junglewise Threat Intelligence has no report of CVE-2026-33765 being exploited in the wild.
How severe is CVE-2026-33765?
Critical severity, with a CVSS score of 9.8, published 27 March 2026.
Which products and versions are affected?
Pi-hole Web Interface. The advisory does not name versions.
Is there a fix for CVE-2026-33765?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2026-33765?
Check whether you run Pi-hole Web Interface. 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.