CVE-2026-35519: 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 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.
AI Analysis
Technical Summary
Pi-hole FTL (FTLDNS) versions 6.0 through 6.5 contain an OS command injection vulnerability (CWE-78) in the dns.hostRecord parameter. Authenticated attackers can exploit this by injecting newline characters to add arbitrary dnsmasq configuration directives, resulting in remote code execution on the host system. This vulnerability affects the interactive API and statistics generation components of Pi-hole's Web interface. The vulnerability is addressed in version 6.6.
Potential Impact
Successful exploitation allows an authenticated attacker to execute arbitrary commands on the underlying system hosting Pi-hole FTL. This can lead to full system compromise, including confidentiality, integrity, and availability impacts as reflected by the CVSS vector (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H). There are no known exploits in the wild at this time.
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 controls to the Pi-hole interface are properly enforced. Patch status is confirmed fixed in version 6.6; no other official remediation or temporary fixes are indicated.
CVE-2026-35519: 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 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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Pi-hole FTL (FTLDNS) versions 6.0 through 6.5 contain an OS command injection vulnerability (CWE-78) in the dns.hostRecord parameter. Authenticated attackers can exploit this by injecting newline characters to add arbitrary dnsmasq configuration directives, resulting in remote code execution on the host system. This vulnerability affects the interactive API and statistics generation components of Pi-hole's Web interface. The vulnerability is addressed in version 6.6.
Potential Impact
Successful exploitation allows an authenticated attacker to execute arbitrary commands on the underlying system hosting Pi-hole FTL. This can lead to full system compromise, including confidentiality, integrity, and availability impacts as reflected by the CVSS vector (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H). There are no known exploits in the wild at this time.
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 controls to the Pi-hole interface are properly enforced. Patch status is confirmed fixed in version 6.6; no other official remediation or temporary fixes are indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-04-03T02:15:39.280Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69d52a46aaed68159a30f89e
Added to database: 4/7/2026, 4:01:10 PM
Last enriched: 4/7/2026, 4:17:04 PM
Last updated: 4/8/2026, 1:36:21 AM
Views: 5
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