What the vulnerability does
01Description
The Paypal Payment Shortcode plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'buttom_image' parameter of the [paypal-shortcode] shortcode in all versions up to, and including, 1.01 due to insufficient input sanitization and output escaping. 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.
Explanation of Vulnerability in Simple Terms
02Summary
The Paypal Payment Shortcode plugin contains a cross-site scripting (XSS) vulnerability that allows authenticated users to inject malicious scripts. An attacker with low-level site access can craft a malicious shortcode or input that executes JavaScript in other users' browsers, potentially stealing session tokens or performing actions on their behalf. The vulnerability affects all versions up to 1.01.
What an attacker can do
03Attacker Capabilities
Inject JavaScript code that runs in other users' browsers and steals their session data or performs actions as them.
Potential impact on your site
04Site Impact
Authenticated attackers can compromise other users' accounts or sessions, including administrators, without their knowledge.
Conditions required to exploit
05Prerequisites
Attacker must have a low-privilege account on the site (e.g., contributor or subscriber role).
Key dates
06Disclosure timeline
December 12, 2025
CVE published
April 8, 2026
Record updated
