What is CVE-2026-35520?

CVE-2026-35520 is a high-severity vulnerability in Pi-hole Ftl, classified under OS Command Injection. CVSS score: 8.8/10. Published 2026-04-07.

How severe is CVE-2026-35520?

High severity. CVSS v3 base score is 8.8 out of 10.

RCE in Pi-hole Ftl

CVE-2026-35520

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 lease time configura…

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.005 (65.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Pi-hole Ftl — versions >= 6.0, < 6.6
Pi-hole Ftldns

Weakness classification (CWE)

References

https://github.com/pi-hole/FTL/security/advisories/GHSA-fqv2-qhfh-ghcj (x_refsource_CONFIRM, Exploit, Vendor Advisory)

Frequently asked questions

What is CVE-2026-35520?: CVE-2026-35520 is a high-severity vulnerability in Pi-hole Ftl, classified under OS Command Injection. CVSS score: 8.8/10. Published 2026-04-07.
How severe is CVE-2026-35520?: High severity. CVSS v3 base score is 8.8 out of 10.