{"id":"CVE-2026-35491","summary":"Pi-hole FTL: CLI API sessions can import Teleporter archives and modify configuration","details":"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.","aliases":["GHSA-r7g8-3fj7-m5qq"],"modified":"2026-07-15T01:49:03.696517061Z","published":"2026-04-07T15:00:11.079Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/35xxx/CVE-2026-35491.json","cna_assigner":"GitHub_M","cwe_ids":["CWE-863"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/35xxx/CVE-2026-35491.json"},{"type":"ADVISORY","url":"https://github.com/pi-hole/FTL/security/advisories/GHSA-r7g8-3fj7-m5qq"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-35491"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/pi-hole/ftl","events":[{"introduced":"eaa7dbb4cf4316413558c9d4b4e3f2a44f8e8203"},{"fixed":"71b6fc62571075740a3c721d5e961db9c3609376"}],"database_specific":{"source":["AFFECTED_FIELD","CPE_RANGE"],"cpe":"cpe:2.3:a:pi-hole:ftldns:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"6.0"},{"fixed":"6.6"}]}}],"versions":["v6.5","v6.4.1","v6.3.3","v6.3.2","v6.3.1","v6.3","v6.2.3","v6.2.2","v6.2.1","v6.2","v6.1","v6.0.4","v6.0.3","v6.0.2","v6.0.1","v6.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-35491.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L"}]}