CVE-2026-35521: CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in pi-hole FTL
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.
AI Analysis
Technical Summary
The Pi-hole FTL engine (FTLDNS) provides an interactive API and statistics for the Pi-hole web interface. Between versions 6.0 and before 6.6, it contains an OS command injection vulnerability in the dhcp.hosts configuration parameter. This flaw allows an authenticated user to inject newline characters that break out of expected input and insert arbitrary dnsmasq configuration directives, ultimately enabling remote code execution on the host system. The vulnerability is resolved in version 6.6.
Potential Impact
Successful exploitation allows an authenticated attacker to execute arbitrary commands on the underlying system hosting Pi-hole FTL, potentially leading to full system compromise. The vulnerability affects confidentiality, integrity, and availability as indicated by the CVSS vector (C:H/I:H/A:H). No known exploits in the wild have been reported yet.
Mitigation Recommendations
Upgrade Pi-hole FTL to version 6.6 or later, where this vulnerability is fixed. Since the vulnerability requires authentication, ensure that access to the Pi-hole interface is properly restricted. Patch status is confirmed by the vendor's versioning information; no other official remediation details are provided. Patch status is confirmed by the vendor's versioning information; no other official remediation details are provided.
CVE-2026-35521: CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in pi-hole FTL
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Pi-hole FTL engine (FTLDNS) provides an interactive API and statistics for the Pi-hole web interface. Between versions 6.0 and before 6.6, it contains an OS command injection vulnerability in the dhcp.hosts configuration parameter. This flaw allows an authenticated user to inject newline characters that break out of expected input and insert arbitrary dnsmasq configuration directives, ultimately enabling remote code execution on the host system. The vulnerability is resolved in version 6.6.
Potential Impact
Successful exploitation allows an authenticated attacker to execute arbitrary commands on the underlying system hosting Pi-hole FTL, potentially leading to full system compromise. The vulnerability affects confidentiality, integrity, and availability as indicated by the CVSS vector (C:H/I:H/A:H). No known exploits in the wild have been reported yet.
Mitigation Recommendations
Upgrade Pi-hole FTL to version 6.6 or later, where this vulnerability is fixed. Since the vulnerability requires authentication, ensure that access to the Pi-hole interface is properly restricted. Patch status is confirmed by the vendor's versioning information; no other official remediation details are provided. Patch status is confirmed by the vendor's versioning information; no other official remediation details are provided.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-04-03T02:15:39.281Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69d52a46aaed68159a30f8a4
Added to database: 4/7/2026, 4:01:10 PM
Last enriched: 4/7/2026, 4:16:46 PM
Last updated: 4/8/2026, 2:10:42 AM
Views: 5
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