CVE-2026-35521

8.8

High

Published:7 Apr 2026

Last updated:17 Jun 2026

Source:security-advisories@github.com

Analyzed

Weakness (CWE)

CVSS Vector

v3.1

Attack Vector: Network
Attack Complexity: Low
Privileges Required: Low
User Interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: High
Availability: High

View on MITRE Find PoC on GitHub

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 DHCP hosts configuration parameter (dhcp.hosts). 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

security-advisories@github.com

https://github.com/pi-hole/FTL/security/advisories/GHSA-vfmq-jrx3-wv3c