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High severity8.8NVD Advisory· Published Apr 7, 2026· Updated Apr 28, 2026

CVE-2026-35518

CVE-2026-35518

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.

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Affected products

2
  • Pi Hole/Ftldns2 versions
    cpe:2.3:a:pi-hole:ftldns:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:a:pi-hole:ftldns:*:*:*:*:*:*:*:*range: >=6.0,<=6.5
    • (no CPE)range: >=6.0, <6.6

Patches

Vulnerability mechanics

References

1

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