Adam Warner

6 exploits Active since Jun 2020
CVE-2026-39849 WRITEUP HIGH WRITEUP
Pi-hole FTL remote code execution via newline injection in dns.interface configuration
Pi-hole FTL is the core engine of the Pi-hole network-level advertisement and tracker blocker. In versions before 6.6.1, the `dns.interface` configuration field in Pi-hole FTL accepted newline characters without validation, allowing an attacker to inject arbitrary directives into the generated dnsmasq configuration file. On installations with no admin password set (the default for many deployments), the configuration API is fully accessible without credentials, allowing a network-adjacent attacker to inject the payload, enable the built-in DHCP server, and achieve arbitrary command execution on the host the next time any device on the network requests a DHCP lease. The injected value is persisted to /etc/pihole/pihole.toml and survives restarts. The strncpy in the code path limits the total interface field to 31 bytes, but payloads such as wlan0\ndhcp-script=/tmp/p fit within this constraint. The dnsmasq config validation introduced in FTL 6.6 only checks syntactic validity, so valid directives injected via newline pass validation successfully. This issue has been fixed in version 6.6.1.
CVSS 8.8
CVE-2020-14971 WRITEUP HIGH WRITEUP
Pi-hole < 5.0 - Code Injection via Teleporter Backup File Restoration
Pi-hole through 5.0 allows code injection in piholedhcp (the Static DHCP Leases section) by modifying Teleporter backup files and then restoring them. This occurs in settings.php. To exploit this, an attacker would request a backup of limited files via teleporter.php. These are placed into a .tar.gz archive. The attacker then modifies the host parameter in dnsmasq.d files, and then compresses and uploads these files again.
CVSS 7.8
CVE-2021-3706 WRITEUP HIGH WRITEUP
Pi-hole Web Interface < 5.6 - Sensitive Cookie Without 'HttpOnly' Flag
adminlte is vulnerable to Sensitive Cookie Without 'HttpOnly' Flag
CVSS 7.5
CVE-2021-3811 WRITEUP MEDIUM WRITEUP
Pi-hole Web Interface < 5.6 - Stored Cross-Site Scripting
adminlte is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVSS 6.1
CVE-2021-3812 WRITEUP MEDIUM WRITEUP
Pi-hole Web Interface < 5.6 - Stored Cross-Site Scripting
adminlte is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVSS 6.1
CVE-2021-41175 WRITEUP HIGH WRITEUP
Pi-hole Web Interface < 5.8 - Stored Cross-Site Scripting via Groups-Clients Management Page
Pi-hole's Web interface (based on AdminLTE) provides a central location to manage one's Pi-hole and review the statistics generated by FTLDNS. Prior to version 5.8, cross-site scripting is possible when adding a client via the groups-clients management page. This issue was patched in version 5.8.
CVSS 7.3