CVE-2025-6987: Mdempfle Advanced Iframe

Medium severity, CVSS 6.4. EPSS: 0.3% chance of exploitation in the next 30 days.

The Advanced iFrame plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'advanced_iframe' shortcode in all versions up to, and including, 2025.5 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.

Affected products

• Mdempfle Advanced Iframe: up to and including 2025.5

Published 2025-07-26. Last modified 2026-06-17.