Authorization bypass through user-controlled key issue exists in EC-CUBE 2.11.0 through 2.12.2 and EC-Orange systems deployed before June 29th, 2015. If this vulnerability is exploited, a user of the affected shopping website may obtain other users' information by sending a crafted HTTP request.
https://jvndb.jvn.jp/jvndb/JVNDB-2024-000054
https://jvn.jp/en/jp/JVN15637138/
http://www.ec-cube.net/info/weakness/weakness.php?id=57