An unauthenticated remote attacker is able to get the database password via webaccess due to wrong file permissions of the /logs/ folder in froxlor version 0.9.33.1 and earlier. The plain SQL password and username may be stored in the /logs/sql-error.log file. This directory is publicly reachable under the default configuration/setup.
Note that froxlor 0.9.33.2 prevents future logging of passwords but does not retroactively remove passwords already logged. Michael Kaufmann, the Froxlor lead developer reports:
Removing all .log files from the directory should do the job, alternatively just use the class.ConfigIO.php from Github