Authentication bypass in AdGuard Home --glinet mode via Admin-Token path traversal
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 resides 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 resolve and read from unintended filesystem paths instead of the expected token file location. This path manipulation can be used to satisfy the GL.iNet-specific authentication logic and bypass normal authentication controls, resulting in full administrative access.
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Impact
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Mitigation
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Exploits
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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.
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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.