Authentication Bypass via Path Traversal in AdGuard Home --glinet Mode
CVE-2026-41448 is an authentication bypass vulnerability in AdGuard Home that is exposed when the product is started with the --glinet flag. The flaw is in the authglinet middleware, where the value supplied in the Admin-Token cookie or header is incorporated into the token file path using unsanitized string concatenation. By supplying path traversal sequences in the Admin-Token value, an unauthenticated attacker can cause the application to read from attacker-selected filesystem paths instead of the intended token file location. This breaks the authentication logic and can result in full administrative access to the AdGuard Home instance.
Are you exposed to this one?
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
Impact, mitigation & remediation
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
If you can’t patch tonight, do this now.
Remediation
Patch, then assume compromise.
Exploits
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Recent activity
7 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
The version that knows your environment.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.