Ultra Skype Button, CVE-2025-13898

CVE, Research URL: CVE-2025-13898
Home page URL: Security reports for Ultra Skype Button
Application: Ultra Skype Button
Published on: Dec 06, 2025
Research Description: The Ultra Skype Button plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'btn_id' parameter of the [ultra_skype] shortcode in all versions up to, and including, 1.0 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 versions: max 1.0.
Status: vulnerable