Remote Code Execution Vulnerability in Pi-hole FTL Engine
CVE-2026-35518

8.8HIGH

Key Information:

Vendor

Pi-hole

Status
Ftl
Vendor
CVE Published:
7 April 2026

What is CVE-2026-35518?

The Pi-hole FTL engine, utilized for processing DNS queries and providing analytics through an interactive API, experienced a significant vulnerability affecting versions from 6.0 up to, but not including, 6.6. This flaw resides in the handling of DNS CNAME records, allowing authenticated attackers to inject arbitrary dnsmasq configuration directives via newline characters. Consequently, this could lead to the execution of commands on the underlying system. Users are strongly recommended to upgrade to version 6.6 or later to mitigate this risk.

Affected Version(s)

FTL >= 6.0, < 6.6

References

https://github.com/pi-hole/FTL/security/advisories/GHSA-2...
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

.