What is CVE-2026-35491?

CVE-2026-35491 is a medium-severity vulnerability in Pi-hole Ftl, classified under Incorrect Authorization. CVSS score: 6.1/10. Published 2026-04-07.

How severe is CVE-2026-35491?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Auth bypass in Pi-hole Ftl

CVE-2026-35491

FTLDNS (pihole-FTL) provides an interactive API and also generates statistics for Pi-hole's Web interface. From 6.0 to before 6.6, Pi-hole FTL supports a CLI password feature (webserver.api.cli_pw) that creates “CLI” API sessions intended…

Vulnerability class: Broken Access Control

EPSS: 0.002 (5.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L.

Affected products

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

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Mitigation, Vendor Advisory)

Frequently asked questions

What is CVE-2026-35491?: CVE-2026-35491 is a medium-severity vulnerability in Pi-hole Ftl, classified under Incorrect Authorization. CVSS score: 6.1/10. Published 2026-04-07.
How severe is CVE-2026-35491?: Medium severity. CVSS v3 base score is 6.1 out of 10.