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 upstream DNS servers configuration parameter (dns.upstreams). 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.
History

Thu, 09 Apr 2026 08:30:00 +0000

Type Values Removed Values Added
First Time appeared Pi-hole
Pi-hole ftldns
Vendors & Products Pi-hole
Pi-hole ftldns

Thu, 09 Apr 2026 07:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 07 Apr 2026 18:00:00 +0000

Type Values Removed Values Added
Description 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 upstream DNS servers configuration parameter (dns.upstreams). 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.
Title Pi-hole FTL affected by Remote Code Execution (RCE) via dns.upstreams Newline Injection
Weaknesses CWE-78
CWE-93
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-04-07T15:16:02.955Z

Updated: 2026-04-07T18:19:50.497Z

Reserved: 2026-04-03T02:15:39.280Z

Link: CVE-2026-35517

cve-icon Vulnrichment

Updated: 2026-04-07T18:19:46.559Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-04-07T16:16:28.093

Modified: 2026-04-08T21:27:00.663

Link: CVE-2026-35517

cve-icon Redhat

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