Vulnerability · Published Apr 6, 2026 · Assigned by GitHub_M
CVE-2026-33727Pi-hole has a Local Privilege Escalation (post-compromise, pihole -> root).
Medium 6.4
In plain English
A medium-severity privilege mismanagement in pi-hole from pi-hole. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 13% of all known vulnerabilities).
Official description
Pi-hole is a Linux network-level advertisement and Internet tracker blocking application. Version 6.4 has a local privilege-escalation vulnerability allows code execution as root from the low-privilege pihole account. Important context: the pihole account uses nologin, so this is not a direct interactive-login issue. However, nologin does not prevent code from running as UID pihole if a Pi-hole component is compromised. In that realistic post-compromise scenario, attacker-controlled content in /etc/pihole/versions is sourced by root-run Pi-hole scripts, leading to root code execution. This vulnerability is fixed in 6.4.1.
Affected products (as reported)
Weakness: CWE-269 · Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
References
- https://github.com/pi-hole/pi-hole/security/advisories/GHSA-c935-8g63-qp74 x_refsource_CONFIRM