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.
Fix
Public exploits 1
- keraattin/CVE-2026-35517 PoC on GitHub
Each line links to the index that lists it, never to exploit code. Exploit-DB's "verified" and a Metasploit rank of good or better count as verified; a PoC-in-GitHub entry is a repository's claim.
Patch, vendor advisory and mitigation references on NVD 1
- https://github.com/pi-hole/FTL/security/advisories/GHSA-23w8-7333-p9fj Exploit, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 8.8 · pi-holeNVD modified 2026-10-26 22:10
Affected (CPE criteria) 1
cpe:2.3:a:pi-hole:ftldns:*:*:*:*:*:*:*:*
References 1
- https://github.com/pi-hole/FTL/security/advisories/GHSA-23w8-7333-p9fj Exploit, Vendor Advisory