Remote Code Execution in Pi-hole's FTL Engine
CVE-2026-35520

8.8HIGH

Key Information:

Vendor

Pi-hole

Status
Ftl
Vendor
CVE Published:
7 April 2026

What is CVE-2026-35520?

The Pi-hole FTL engine is susceptible to a Remote Code Execution vulnerability via a flaw in the DHCP lease time configuration parameter (dhcp.leaseTime). This issue allows authenticated attackers to inject arbitrary dnsmasq configuration directives, potentially leading to command execution on the underlying system. Users are advised to upgrade to version 6.6 or higher to mitigate this risk.

Affected Version(s)

FTL >= 6.0, < 6.6

References

https://github.com/pi-hole/FTL/security/advisories/GHSA-f...
x_refsource_CONFIRM

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.