CVE-2026-35491 MEDIUM

CVE-2026-35491: Pi-hole FTL: CLI API sessions can import Teleporter archives and modify configuration

Vendor Pi-Hole
Product FTL
Weakness CWE-863 · Incorrect authorization
Published April 7, 2026
Last update April 7, 2026
View on NVD All CVEs

CVSS base score

6.1/10
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality None
Integrity High

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L

What the vulnerability does

01Description

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 to be read-only for configuration changes. While /api/config correctly blocks CLI sessions from mutating configuration, /api/teleporter allowed Teleporter imports for CLI sessions, enabling a CLI-scoped session to overwrite configuration via a Teleporter archive (authorization bypass). This vulnerability is fixed in 6.6.

Key dates

02Disclosure timeline

April 7, 2026 CVE published
April 7, 2026 Record updated