CVE-2026-35519: Pi-hole Ftldns

High severity, CVSS 8.8. EPSS: 1% chance of exploitation in the next 30 days.

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 DNS host record configuration parameter (dns.hostRecord). 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.

Affected products

• Pi-hole Ftldns: from 6.0, up to and including 6.5

Published 2026-04-07. Last modified 2026-06-17.