CVE-2026-41448
AdGuard Home Authentication Bypass via Path Traversal in Admin-Token Cookie
CVSS Score
9.4
EPSS Score
0.0%
EPSS Percentile
0th
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, 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.
| CWE | CWE-22 |
| Vendor | adguardteam |
| Product | adguardhome |
| Published | Jun 8, 2026 |
| Last Updated | Jun 8, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
Low
Affected Versions
AdguardTeam / AdGuardHome
0 < 0.107.77
References
Credits
djnn VulnCheck