CVE-2026-35491

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

State: Published
Severity: 6.1 Medium
Published: Apr 7, 2026
Updated: Apr 7, 2026
Reserved: Apr 2, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	6.1 Medium	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L	GitHub_M

Weaknesses

CWE-863 Incorrect Authorization

Affected Products

Product	Versions
FTLpi-hole	>= 6.0, < 6.6Affected

References

https://github.com/pi-hole/FTL/security/advisories/GHSA-r7g8-3fj7-m5qq

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