An arbitrary file read vulnerability in Adguard Home before v0.107.52 allows authenticated attackers to access arbitrary files as root on the underlying Operating System via placing a crafted file into a readable directory.
The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.