L-Forum 2.40 and earlier does not properly verify whether a file was uploaded or if the associated variables were set by POST (attachment, attachment_name, attachment_size and attachment_type), which allows remote attackers to read arbitrary files.
AV:N/AC:L/Au:N/C:P/I:N/A:N
This vulnerability has a 1.91% probability of being exploited in the next 30 days, ranking higher than 79% of all scored CVEs.