The Welcart e-Commerce plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘name’ parameter in all versions up to, and including, 2.11.9 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Welcart e-Commerce prior to 2.11.2 contains a cross-site scripting vulnerability. If this vulnerability is exploited, an arbitrary script may be executed on the user's web browser.

SQL injection vulnerability in Welcart e-Commerce prior to 2.11.2 allows an attacker who can login to the product to obtain or alter the information stored in the database.

Missing Authorization vulnerability in Welcart Inc. Welcart e-Commerce.This issue affects Welcart e-Commerce: from n/a through 2.9.14.

Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in Collne Inc. Welcart e-Commerce.This issue affects Welcart e-Commerce: from n/a through 2.9.3.

The Welcart e-Commerce plugin for WordPress is vulnerable to Directory Traversal in all versions up to, and including, 2.9.6 via the upload_certificate_file function. This makes it possible for administrators to upload .pem or .crt files to arbitrary locations on the server.

The Welcart e-Commerce WordPress plugin before 2.9.5 does not validate files to be uploaded, as well as does not have authorisation and CSRF in an AJAX action handling such upload. As a result, any authenticated users, such as subscriber could upload arbitrary files, such as PHP on the server

The Welcart e-Commerce WordPress plugin before 2.9.5 unserializes user input from cookies, which could allow unautehtniacted users to perform PHP Object Injection when a suitable gadget is present on the blog

The Welcart e-Commerce WordPress plugin before 2.9.5 does not sanitise and escape a parameter before outputting it back in the page, leading to a Reflected Cross-Site Scripting which could be used against high privilege users such as admin

Cross-site scripting vulnerability in Order Data Edit page of Welcart e-Commerce versions 2.7 to 2.8.21 allows a remote unauthenticated attacker to inject an arbitrary script.