A vulnerability has been discovered in ES Simple Download, which can be exploited by malicious users to disclose sensitive information.
Input passed via the "file" parameter to download.php (when "PHPSESSID" is set) is not properly verified before being used to read files. This can be exploited to read arbitrary files from local resources via directory traversal sequences.
The vulnerability is confirmed in version 1.0. Other versions may also be affected.
Solution: Edit the source code to ensure that input is properly verified.
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Subject: ES Simple Download "file" File Disclosure Vulnerability
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