CVE-2026-35491: FTLDNS (pihole-FTL) provides an interactive API and also generates statistics for Pi-hole's Web interface. From 6.0 to…

CVE-2026-35491 · Severity: medium · CVSS 6.1 · Published 2026-04-07

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.

Technologies: Pi-hole Ftldns. Vendors: Pi-hole.

Quick answers

Is CVE-2026-35491 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-35491 being exploited in the wild.
How severe is CVE-2026-35491?
Medium severity, with a CVSS score of 6.1, published 7 April 2026.
Which products and versions are affected?
Pi-hole Ftldns. The advisory does not name versions.
Is there a fix for CVE-2026-35491?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2026-35491?
Check whether you run Pi-hole Ftldns. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Affected products

  • Pi-hole Ftldns

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