Medium severity · published Apr 7, 2026
CVE-2026-35491
Pi-hole FTL: CLI API sessions can import Teleporter archives and modify configuration
6.1
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
High
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 5% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FT
FTL · pi-hole
>= 6.0, < 6.6 · source: vendor
FT
Ftldns · Pi-hole
6.0 before 6.6 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-35491
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-35491
Exploit
https://github.com/pi-hole/FTL/security/advisories/GHSA-r7g8-3fj7-m5qq
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