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2 vulnerabilities by AdguardTeam

CVE-2026-41448 (GCVE-0-2026-41448)

Vulnerability from cvelistv5 – Published: 2026-06-08 16:12 – Updated: 2026-06-08 17:55 X_Open Source
VLAI
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, 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.
Severity
9.2 (Critical)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
9.4 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
Impacted products
Vendor Product Version
AdguardTeam AdGuardHome Affected: 0 , < 0.107.77 (semver)
Create a notification for this product.
Date Public
2026-06-02 00:00
Credits
djnn VulnCheck
Show details on NVD website
To clipboard 

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CVE-2026-32136 (GCVE-0-2026-32136)

Vulnerability from cvelistv5 – Published: 2026-03-11 21:42 – Updated: 2026-03-12 16:17
VLAI
Title
AdGuard Home: HTTP/2 Cleartext (h2c) Upgrade Authentication Bypass
Summary
AdGuard Home is a network-wide software for blocking ads and tracking. Prior to 0.107.73, an unauthenticated remote attacker can bypass all authentication in AdGuardHome by sending an HTTP/1.1 request that requests an upgrade to HTTP/2 cleartext (h2c). Once the upgrade is accepted, the resulting HTTP/2 connection is handled by the inner mux, which has no authentication middleware attached. All subsequent HTTP/2 requests on that connection are processed as fully authenticated, regardless of whether any credentials were provided. This vulnerability is fixed in 0.107.73.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: poc Automatable: yes Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-287 - Improper Authentication
Assigner
References
Impacted products
Vendor Product Version
AdguardTeam AdGuardHome Affected: < 0.107.73
Create a notification for this product.
Show details on NVD website
To clipboard 

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