🛡️ CVE-2026-32136
🔴 CVSS 9.8 — Critical ⚠️ Exploit Public CWE-287 NVD
9.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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.

Details

Severity CRITICAL
CVSS Score 9.8
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE CWE-287
Public Exploit ⚠️ Yes
Source NVD
Published 2026-03-11
Updated 2026-06-14
Modified 2026-03-13
Fix URL N/A

Affected Packages

Software From version Fixed in
adguardhome — 0.107.73
github.com/adguardteam/adguardhome — —

Similar Threats

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