CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L
Lifecycle Timeline
3Description
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.
Analysis
Pi-hole FTL versions 6.0 through 6.5 allow authenticated local users with CLI API session privileges to bypass authorization controls and overwrite configuration settings via Teleporter archive imports. The vulnerability exists because the /api/teleporter endpoint incorrectly permits CLI-scoped sessions (intended to be read-only) to execute privileged Teleporter operations, while the /api/config endpoint correctly enforces restrictions. …
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External POC / Exploit Code
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EUVD-2026-19676