RCE in Pi-Hole Ftl
CVE-2026-35519
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.
Vulnerability class: Command Injection (OS Command Injection)
EPSS: 0.005 (43.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Pi-hole Ftl — versions >= 6.0, < 6.6
- Pi-hole Ftldns
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-35519?
- CVE-2026-35519 is a high-severity vulnerability in Pi-Hole Ftl, classified under OS Command Injection. CVSS score: 8.8/10. Published 2026-04-07.
- How severe is CVE-2026-35519?
- High severity. CVSS v3 base score is 8.8 out of 10.