CVE-2025-13966: SONLAMTN200 PayPal Payment Shortcode

Medium severity, CVSS 6.4. EPSS: 0.2% chance of exploitation in the next 30 days.

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.

Affected products

• SONLAMTN200 PayPal Payment Shortcode: up to and including 1.01

Published 2025-12-12. Last modified 2026-10-07.