WordPress Simple PayPal Shopping Cart <= 5.1.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode
Vulnerability Description
The WordPress Simple Shopping Cart plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'wp_cart_button' shortcode in all versions up to, and including, 5.1.3 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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
Am I Vulnerable?
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Credits & Attribution
The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:
- Jack Taylor
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/93898bf8-cfed-44bf-9d68-a0167beba86a?source=cve
- https://plugins.trac.wordpress.org/browser/wordpress-simple-paypal-shopping-cart/tags/5.1.2/includes/wpsc-shortcodes-related.php#L20
- https://www.tipsandtricks-hq.com/ecommerce/simple-wp-shopping-cart-installation-usage-290#step-1-inserting-an-add-to-cart-button
- https://plugins.trac.wordpress.org/changeset/3284572/
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