Acceptance of extraneous untrusted data with trusted data vulnerability exists in EC-CUBE 4 series. If this vulnerability is exploited, an attacker who obtained the administrative privilege may install an arbitrary PHP package. If the obsolete versions of PHP packages are installed, the product may be affected by some known vulnerabilities.

Stored cross-site scripting vulnerability exists in EC-CUBE Web API Plugin. When there are multiple users using OAuth Management feature and one of them inputs some crafted value on the OAuth Management page, an arbitrary script may be executed on the web browser of the other user who accessed the management page.

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.

EC-CUBE 2.11.0 to 2.17.2-p1 contain a cross-site scripting vulnerability in "mail/template" and "products/product" of Management page. If this vulnerability is exploited, an arbitrary script may be executed on the web browser of the other administrator or the user who accessed the website using the product.

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.

Directory traversal vulnerability in EC-CUBE 3 series (EC-CUBE 3.0.0 to 3.0.18-p4 ) and EC-CUBE 4 series (EC-CUBE 4.0.0 to 4.1.2) allows a remote authenticated attacker with an administrative privilege to obtain the product's directory structure information.

DOM-based cross-site scripting vulnerability in EC-CUBE 4 series (EC-CUBE 4.0.0 to 4.1.2) allows a remote attacker to inject an arbitrary script by having an administrative user of the product to visit a specially crafted page.

EC-CUBE 3.0.0 to 3.0.18-p3 and EC-CUBE 4.0.0 to 4.1.1 improperly handle HTTP Host header values, which may lead a remote unauthenticated attacker to direct the vulnerable version of EC-CUBE to send an Email with some forged reissue-password URL to EC-CUBE users.