Vulnerability Details 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 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 2.4%
CVSS Severity
CVSS v3 Score 6.1
Products affected by CVE-2026-35491
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cpe:2.3:a:pi-hole:ftldns:6.0
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cpe:2.3:a:pi-hole:ftldns:6.0.1
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cpe:2.3:a:pi-hole:ftldns:6.0.2
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cpe:2.3:a:pi-hole:ftldns:6.0.3
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cpe:2.3:a:pi-hole:ftldns:6.0.4
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cpe:2.3:a:pi-hole:ftldns:6.1
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cpe:2.3:a:pi-hole:ftldns:6.2
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cpe:2.3:a:pi-hole:ftldns:6.2.1
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cpe:2.3:a:pi-hole:ftldns:6.2.2
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cpe:2.3:a:pi-hole:ftldns:6.2.3
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cpe:2.3:a:pi-hole:ftldns:6.3
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cpe:2.3:a:pi-hole:ftldns:6.3.1
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cpe:2.3:a:pi-hole:ftldns:6.3.2
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cpe:2.3:a:pi-hole:ftldns:6.3.3
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cpe:2.3:a:pi-hole:ftldns:6.4
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cpe:2.3:a:pi-hole:ftldns:6.4.1
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cpe:2.3:a:pi-hole:ftldns:6.5