AdguardTeam AdGuardHome up to 0.107.76 path traversal

Summaryinfo

A vulnerability, which was classified as critical, was found in AdguardTeam AdGuardHome up to 0.107.76. Affected is an unknown function. Executing a manipulation can lead to path traversal. This vulnerability is registered as CVE-2026-41448. It is possible to launch the attack remotely. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in AdguardTeam AdGuardHome up to 0.107.76. This vulnerability affects some unknown functionality. The manipulation with an unknown input leads to a path traversal vulnerability. The CWE definition for the vulnerability is CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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.

The weakness was published by djnn. The advisory is shared for download at github.com. This vulnerability was named CVE-2026-41448 since 04/20/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1006.

Upgrading to version 0.107.77 eliminates this vulnerability. The upgrade is hosted for download at github.com.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

• AdguardTeam

Name

• AdGuardHome

Version

• 0.107.0
• 0.107.1
• 0.107.2
• 0.107.3
• 0.107.4
• 0.107.5
• 0.107.6
• 0.107.7
• 0.107.8
• 0.107.9
• 0.107.10
• 0.107.11
• 0.107.12
• 0.107.13
• 0.107.14
• 0.107.15
• 0.107.16
• 0.107.17
• 0.107.18
• 0.107.19
• 0.107.20
• 0.107.21
• 0.107.22
• 0.107.23
• 0.107.24
• 0.107.25
• 0.107.26
• 0.107.27
• 0.107.28
• 0.107.29
• 0.107.30
• 0.107.31
• 0.107.32
• 0.107.33
• 0.107.34
• 0.107.35
• 0.107.36
• 0.107.37
• 0.107.38
• 0.107.39
• 0.107.40
• 0.107.41
• 0.107.42
• 0.107.43
• 0.107.44
• 0.107.45
• 0.107.46
• 0.107.47
• 0.107.48
• 0.107.49
• 0.107.50
• 0.107.51
• 0.107.52
• 0.107.53
• 0.107.54
• 0.107.55
• 0.107.56
• 0.107.57
• 0.107.58
• 0.107.59
• 0.107.60
• 0.107.61
• 0.107.62
• 0.107.63
• 0.107.64
• 0.107.65
• 0.107.66
• 0.107.67
• 0.107.68
• 0.107.69
• 0.107.70
• 0.107.71
• 0.107.72
• 0.107.73
• 0.107.74
• 0.107.75
• 0.107.76

Website

• Product: https://github.com/AdguardTeam/AdGuardHome/

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Discussion