The system fails to properly validate the contents of .zip or .rar plugin packages during the administrative "Install Plugin" process, allowing an attacker to upload a web shell. Technical Analysis
: FastAdmin's backend extracts the archive into the /addons/ directory. 53849.rar
The 53849.rar archive typically contains a directory structure designed to mimic a legitimate FastAdmin plugin, but with a malicious payload: The system fails to properly validate the contents of
Arbitrary File Upload leading to Remote Code Execution (RCE). 53849.rar
: Attackers can execute arbitrary commands on the server. Data Breach : Direct access to the database via PHP scripts.