CVE-2026-35518

HIGH

Pi-hole FTL affected by Remote Code Execution (RCE) via dns.cnameRecords Newline Injection

Title source: cna

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 DNS CNAME records configuration parameter (dns.cnameRecords). 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.

References (1)

[X_Refsource_Confirm] https://github.com/pi-hole/FTL/security/advisories/GHSA-28g5-gg88-wh5m

Scores

CVSS v3 8.8

EPSS 0.0042

EPSS Percentile 61.8%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation poc

Automatable no

Technical Impact total

Details

CWE

CWE-78 CWE-93

Status published

Products (2)

pi-hole/FTL >= 6.0, < 6.6

pi-hole/ftldns 6.0 - 6.5

Published Apr 07, 2026

Tracked Since Apr 07, 2026