CVE-2026-47703

AdGuard Home is a network-wide software for blocking ads and tracking. Prior to 0.107.75, AdGuard Home's client-triggered DoQ forwarding path to a udp:// upstream reduced backend UDP DNS state by producing dnsid=0 or txid=0 and exposed a quoted-port ICMP source-port oracle, weakening DNS response...

CVE-2026-47703 AdGuard Home: DoQ-to-UDP State Reduction and Source-Port Oracle

AdGuard Home is a network-wide software for blocking ads and tracking. Prior to 0.107.75, AdGuard Home's client-triggered DoQ forwarding path to a udp:// upstream reduced backend UDP DNS state by producing dnsid=0 or txid=0 and exposed a quoted-port ICMP source-port oracle, weakening DNS response...

GO-2026-5756 AdGuard Home: DoQ-to-UDP State Reduction and Source-Port Oracle in github.com/AdguardTeam/AdGuardHome

AdGuard Home: DoQ-to-UDP State Reduction and Source-Port Oracle in github.com/AdguardTeam/AdGuardHome...

CVE-2026-41448

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...

CVE-2026-41448

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...

CVE-2026-41448 AdGuard Home Authentication Bypass via Path Traversal in Admin-Token Cookie

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...

CVE-2026-41448

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...

CVE-2026-41448 AdGuard Home Authentication Bypass via Path Traversal in Admin-Token Cookie

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...

EUVD-2026-35126

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...

CVE-2026-41448 AdGuard Home Authentication Bypass via Path Traversal in Admin-Token Cookie

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...

PT-2026-47346

Name of the Vulnerable Software and Affected Versions AdGuard Home versions prior to 0.107.77 Description When started with the --glinet flag, the software contains an authentication bypass that allows unauthenticated attackers to gain full administrative access. This occurs due to unsanitized...

AdGuard Home: DoQ-to-UDP State Reduction and Source-Port Oracle

Summary This report covers the client-triggered DoQ forwarding path in: - dnsproxy v0.81.2 adguard/dnsproxy:v0.81.2 - AdGuard Home v0.107.74 adguard/adguardhome:latest, image version label v0.107.74 The issue was reproduced on 2026-04-25 with the products configured through their documented DoQ...

GHSA-XGX4-4H9W-53PV AdGuard Home: DoQ-to-UDP State Reduction and Source-Port Oracle

Summary This report covers the client-triggered DoQ forwarding path in: - dnsproxy v0.81.2 adguard/dnsproxy:v0.81.2 - AdGuard Home v0.107.74 adguard/adguardhome:latest, image version label v0.107.74 The issue was reproduced on 2026-04-25 with the products configured through their documented DoQ...

PT-2026-46871

Summary This report covers the client-triggered DoQ forwarding path in: - dnsproxy v0.81.2 adguard/dnsproxy:v0.81.2 - AdGuard Home v0.107.74 adguard/adguardhome:latest, image version label v0.107.74 The issue was reproduced on 2026-04-25 with the products configured through their documented DoQ...

AdGuard Home: DoQ-to-UDP State Reduction and Source-Port Oracle

This report covers the client-triggered DoQ forwarding path in: - dnsproxy v0.81.2 adguard/dnsproxy:v0.81.2 - AdGuard Home v0.107.74 adguard/adguardhome:latest, image version label v0.107.74 The issue was reproduced on 2026-04-25 with the products configured through their documented DoQ listener...

AdGuard Home: DoQ-to-UDP State Reduction and Source-Port Oracle

This report covers the client-triggered DoQ forwarding path in: - dnsproxy v0.81.2 adguard/dnsproxy:v0.81.2 - AdGuard Home v0.107.74 adguard/adguardhome:latest, image version label v0.107.74 The issue was reproduced on 2026-04-25 with the products configured through their documented DoQ listener...

PT-2026-46882

Name of the Vulnerable Software and Affected Versions dnsproxy version 0.81.2 AdGuard Home version 0.107.74 Description A state reduction issue exists in the client-triggered DNS over QUIC DoQ forwarding path when queries are forwarded to a UDP upstream. In this path, the backend DNS ID transacti...

Exploit for Improper Authentication in Adguard Adguardhome

CVE-2026-32136exploit - AdGuard Home h2c Upgrade Auth Bypass...

CVE-2026-32136

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...

SUSE CVE-2026-32136

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...