CVE-2026-35521

[CVE catalog]

FTLDNS (pihole-FTL) provides an interactive API and also generates statistics for Pi-hole's Web interface. From 6.0 to before 6.6, the Pi-hole FTL engine contains a Remote Code Execution (RCE) vulnerability in the DHCP hosts configuration parameter (dhcp.hosts). This vulnerability allows an authenticated attacker to inject arbitrary dnsmasq configuration directives through newline characters, ultimately achieving command execution on the underlying system. This vulnerability is fixed in 6.6.

Severity

High · CVSS 8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Published

Apr 7, 2026, 4:16:28 PM UTC

Source

[NVD] · [CVE record]

EPSS

0.69% · Oct 27, 2026

{
  "package_releases": [],
  "fixed_versions": [],
  "distribution_packages": [
    {
      "name": "ftldns",
      "ecosystem": "cpe",
      "fixed_version": ""
    },
    {
      "name": "ftldns",
      "ranges": [
        {
          "fixed": "",
          "introduced": "6.0",
          "last_affected": "6.5",
          "start_excluding": ""
        }
      ],
      "ecosystem": "cpe",
      "fixed_version": "",
      "provider_record_id": "NVD-CVE-2026-35521"
    }
  ]
}