{"document":{"category":"csaf_vex","csaf_version":"2.0","title":"CVE-2026-44693: Pi-hole FTL: Unauthenticated Session Hijacking via Race Condition on Global Session Buffer","publisher":{"category":"vendor","name":"HarborGuard Database","namespace":"https://database.harborguard.co"},"tracking":{"id":"CVE-2026-44693","status":"final","version":"1","initial_release_date":"2026-06-10T22:11:29.237Z","current_release_date":"2026-06-12T03:55:28.698Z","revision_history":[{"date":"2026-06-10T22:11:29.237Z","number":"1","summary":"Initial machine-readable export from HarborGuard."}]},"distribution":{"tlp":{"label":"WHITE"},"text":"Public CVE data; freely redistributable."},"notes":[{"category":"description","text":"Pi-hole FTL is the core engine of the Pi-hole network-level advertisement and tracker blocker. Prior to version 6.6.1, Pi-hole FTL contains a race condition vulnerability in the HTTP session management subsystem, introduced with the v6.0 rewrite of the embedded CivetWeb-based web server. This issue has been patched in version 6.6.1.","title":"CVE description"}],"references":[{"category":"self","summary":"CVE-2026-44693 on HarborGuard Database","url":"https://database.harborguard.co/cve/CVE-2026-44693"},{"category":"external","summary":"CVE Record","url":"https://www.cve.org/CVERecord?id=CVE-2026-44693"},{"category":"external","summary":"https://github.com/pi-hole/FTL/security/advisories/GHSA-9ff5-f3v5-2xc7","url":"https://github.com/pi-hole/FTL/security/advisories/GHSA-9ff5-f3v5-2xc7"},{"category":"external","summary":"https://github.com/pi-hole/FTL/releases/tag/v6.6.1","url":"https://github.com/pi-hole/FTL/releases/tag/v6.6.1"}]},"product_tree":{"branches":[{"category":"vendor","name":"pi-hole","branches":[{"category":"product_name","name":"FTL","branches":[{"category":"product_version","name":"< 6.6.1","product":{"name":"pi-hole FTL < 6.6.1","product_id":"CSAFPID-1","product_identification_helper":{"cpe":"cpe:2.3:a:pi-hole:ftl:\\<_6.6.1:*:*:*:*:*:*:*"}}}]}]}]},"vulnerabilities":[{"cve":"CVE-2026-44693","title":"Pi-hole FTL: Unauthenticated Session Hijacking via Race Condition on Global Session Buffer","notes":[{"category":"description","text":"Pi-hole FTL is the core engine of the Pi-hole network-level advertisement and tracker blocker. Prior to version 6.6.1, Pi-hole FTL contains a race condition vulnerability in the HTTP session management subsystem, introduced with the v6.0 rewrite of the embedded CivetWeb-based web server. This issue has been patched in version 6.6.1.","title":"CVE description"}],"product_status":{"known_affected":["CSAFPID-1"]},"scores":[{"cvss_v3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","baseScore":8.8,"baseSeverity":"HIGH"},"products":["CSAFPID-1"]}],"remediations":[{"category":"none_available","details":"No fixed version is published yet. Monitor the upstream advisory.","product_ids":["CSAFPID-1"]}]}]}