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8 vulnerabilities by adguard
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)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-287 - Improper Authentication
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/AdguardTeam/AdGuardHome/securi… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| AdguardTeam | AdGuardHome |
Affected:
< 0.107.73
|
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CVE-2026-24902 (GCVE-0-2026-24902)
Vulnerability from cvelistv5 – Published: 2026-01-29 21:21 – Updated: 2026-01-29 21:33
VLAI
Title
TrustTunnel has SSRF and private network restriction bypass via numeric address destinations
Summary
TrustTunnel is an open-source VPN protocol with a server-side request forgery and and private network restriction bypass in versions prior to 0.9.114. In `tcp_forwarder.rs`, SSRF protection for `allow_private_network_connections = false` was only applied in the `TcpDestination::HostName(peer)` path. The `TcpDestination::Address(peer) => peer` path proceeded to `TcpStream::connect()` without equivalent checks (for example `is_global_ip`, `is_loopback`), allowing loopback/private targets to be reached by supplying a numeric IP. The vulnerability is fixed in version 0.9.114.
Severity
7.1 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/TrustTunnel/TrustTunnel/securi… | x_refsource_CONFIRM |
| https://github.com/TrustTunnel/TrustTunnel/commit… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| TrustTunnel | TrustTunnel |
Affected:
< 0.9.114
|
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CVE-2026-24904 (GCVE-0-2026-24904)
Vulnerability from cvelistv5 – Published: 2026-01-29 21:19 – Updated: 2026-01-29 21:34
VLAI
Title
TrustTunnel has `client_random_prefix` rule bypass via fragmented or partial TLS ClientHello
Summary
TrustTunnel is an open-source VPN protocol with a rule bypass issue in versions prior to 0.9.115. In `tls_listener.rs`, `TlsListener::listen()` peeks 1024 bytes and calls `extract_client_random(...)`. If `parse_tls_plaintext` fails (for example, a fragmented/partial ClientHello split across TCP writes), `extract_client_random` returns `None`. In `rules.rs`, `RulesEngine::evaluate` only evaluates `client_random_prefix` when `client_random` is `Some(...)`. As a result, when extraction fails (`client_random == None`), any rule that relies on `client_random_prefix` matching is skipped and evaluation falls through to later rules. As an important semantics note: `client_random_prefix` is a match condition only. It does not mean "block non-matching prefixes" by itself. A rule with `client_random_prefix = ...` triggers its `action` only when the prefix matches (and the field is available to evaluate). Non-matches (or `None`) simply do not match that rule and continue to fall through. The vulnerability is fixed in version 0.9.115.
Severity
5.3 (Medium)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-284 - Improper Access Control
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/TrustTunnel/TrustTunnel/securi… | x_refsource_CONFIRM |
| https://github.com/TrustTunnel/TrustTunnel/commit… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| TrustTunnel | TrustTunnel |
Affected:
< 0.9.115
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CVE-2025-51497 (GCVE-0-2025-51497)
Vulnerability from cvelistv5 – Published: 2025-07-17 00:00 – Updated: 2025-07-24 20:17
VLAI
Summary
An issue was discovered in AdGuard plugin before 1.11.22 for Safari on MacOS. AdGaurd verbosely logged each url that Safari accessed when the plugin was active. These logs went into the MacOS general logs for any unsandboxed process to read. This may be disabled in version 1.11.22.
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- n/a
- CWE-532 - Insertion of Sensitive Information into Log File
Assigner
References
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CVE-2023-41173 (GCVE-0-2023-41173)
Vulnerability from cvelistv5 – Published: 2023-08-25 00:00 – Updated: 2024-10-02 17:51
VLAI
Summary
AdGuard DNS before 2.2 allows remote attackers to cause a denial of service via malformed UDP packets.
Severity
No CVSS data available.
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- n/a
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
1 reference
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CVE-2022-45770 (GCVE-0-2022-45770)
Vulnerability from cvelistv5 – Published: 2023-01-26 00:00 – Updated: 2025-03-31 18:37
VLAI
Summary
Improper input validation in adgnetworkwfpdrv.sys in Adguard For Windows x86 through 7.11 allows local privilege escalation.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- n/a
- CWE-20 - Improper Input Validation
Assigner
References
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CVE-2022-32175 (GCVE-0-2022-32175)
Vulnerability from cvelistv5 – Published: 2022-10-11 14:20 – Updated: 2025-05-20 14:10
VLAI
Title
AdGuardHome - CSRF
Summary
In AdGuardHome, versions v0.95 through v0.108.0-b.13 are vulnerable to Cross-Site Request Forgery (CSRF), in the custom filtering rules functionality. An attacker can persuade an authorized user to follow a malicious link, resulting in deleting/modifying the custom filtering rules.
Severity
5.4 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-352 - Cross-Site Request Forgery (CSRF)
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| AdguardHome | AdguardHome |
Affected:
v0.99.0 , < unspecified
(custom)
Affected: unspecified , ≤ v0.108.0-b.9 (custom) |
Date Public
2022-10-11 00:00
Credits
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CVE-2021-27935 (GCVE-0-2021-27935)
Vulnerability from cvelistv5 – Published: 2021-03-03 19:37 – Updated: 2024-08-03 21:33
VLAI
Summary
An issue was discovered in AdGuard before 0.105.2. An attacker able to get the user's cookie is able to bruteforce their password offline, because the hash of the password is stored in the cookie.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/AdguardTeam/AdGuardHome/issues/2470 | x_refsource_MISC |
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