The WordPress Simple Shopping Cart plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'wp_cart_button' and 'wp_cart_display_product' shortcodes in all versions up to, and including, 5.0.7 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

CWE-79

https://plugins.trac.wordpress.org/browser/wordpress-simple-paypal-shopping-cart/tags/5.0.7/includes/wpsc-shortcodes-related.php#L3

https://plugins.trac.wordpress.org/browser/wordpress-simple-paypal-shopping-cart/tags/5.0.7/wp_shopping_cart_shortcodes.php#L11

https://plugins.trac.wordpress.org/browser/wordpress-simple-paypal-shopping-cart/tags/5.0.7/wp_shopping_cart_shortcodes.php#L49

https://plugins.trac.wordpress.org/browser/wordpress-simple-paypal-shopping-cart/tags/5.0.7/wp_shopping_cart_shortcodes.php#L5

https://plugins.trac.wordpress.org/changeset/3210506/wordpress-simple-paypal-shopping-cart/trunk/includes/wpsc-shortcodes-related.php

https://www.wordfence.com/threat-intel/vulnerabilities/id/adfba556-6a96-4836-af0f-39c214099481?source=cve