{"id":"CVE-2026-41448","title":"AdGuard Home Authentication Bypass via Path Traversal in Admin-Token Cookie","summary":"AdGuard Home, when started with the --glinet flag, contains an authentication bypass vulnerability that allows unauthenticated attackers to gain full admin access by supplying a path traversal sequence in the Admin-Token cookie, exploiti…","severity":"critical","cvss":9.4,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L","cvssSource":"cna","cwe":["CWE-22"],"vendor":"AdguardTeam","product":"AdGuardHome","affected":["AdGuardHome < 0.107.77"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"total","timestamp":"2026-06-08T17:55:04.514029Z"},"published":"2026-06-08","updated":"2026-11-08","sourceUpdated":"2026-11-08T14:03:00.557Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-41448","references":[{"url":"https://github.com/AdguardTeam/AdGuardHome/releases/tag/v0.107.77","label":"AdGuardHome 0.107.77 Release Notes"},{"url":"https://www.vulncheck.com/advisories/adguard-home-authentication-bypass-via-path-traversal-in-admin-token-cookie"}],"tags":["cve.org"],"epss":0.00542,"epssPercentile":0.45816,"ingestedAt":"2026-11-08T14:51:22.440Z","slug":"CVE-2026-41448","body":"## Overview\n\nAdGuard Home, when started with the --glinet flag, contains an authentication bypass vulnerability that allows unauthenticated attackers to gain full admin access by supplying a path traversal sequence in the Admin-Token cookie, exploiting unsanitized string concatenation in the token file path construction within the authglinet middleware. Attackers can craft a request with a traversal payload in the Admin-Token header to redirect file reads to arbitrary paths.\n\n## Affected\n\n- `AdGuardHome < 0.107.77`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":52,"depthScoreParts":{"impact":51.7,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}