Description: Some vulnerabilities have been discovered in Fully Modded phpBB, which can be exploited by malicious people to compromise a vulnerable system.
Input passed to the "foing_root_path" and "phpbb_root_path" parameters in player/includes/common.php is not properly verified before being used to include files. This can be exploited to execute arbitrary PHP code by including files from local or external resources.
The vulnerabilities are confirmed in version 2021.4.40. Other versions may also be affected.
Solution: Edit the source code to ensure that input is properly verified.
Provided and/or discovered by: 020 and an anonymous person
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