EC-CUBE 3 series (3.0.0 to 3.0.18-p6) and 4 series (4.0.0 to 4.0.6-p3, 4.1.0 to 4.1.2-p2, and 4.2.0 to 4.2.2) contain an arbitrary code execution vulnerability due to improper settings of the template engine Twig included in the product. As a result, arbitrary code may be executed on the server where the product is running by a user with an administrative privilege.

Cross-site scripting vulnerability in Authentication Key Settings of EC-CUBE 4.0.0 to 4.0.6-p2, EC-CUBE 4.1.0 to 4.1.2-p1, and EC-CUBE 4.2.0 allows a remote authenticated attacker to inject an arbitrary script.

Cross-site scripting vulnerability in Product List Screen and Product Detail Screen of EC-CUBE 4.0.0 to 4.0.6-p2, EC-CUBE 4.1.0 to 4.1.2-p1, and EC-CUBE 4.2.0 allows a remote authenticated attacker to inject an arbitrary script.

Cross-site scripting vulnerability in Contents Management of EC-CUBE 4 series (EC-CUBE 4.0.0 to 4.0.6-p2, EC-CUBE 4.1.0 to 4.1.2-p1, and EC-CUBE 4.2.0), EC-CUBE 3 series (EC-CUBE 3.0.0 to 3.0.18-p5), and EC-CUBE 2 series (EC-CUBE 2.11.0 to 2.11.5, EC-CUBE 2.12.0 to 2.12.6, EC-CUBE 2.13.0 to 2.13.5, and EC-CUBE 2.17.0 to 2.17.2) allows a remote authenticated attacker to inject an arbitrary script.