CVE-2024-8547: Garrettgrimm Simple Popup Plugin

Medium severity, CVSS 5.4. EPSS: 0.4% chance of exploitation in the next 30 days.

The Simple Popup Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's [popup] shortcode in all versions up to, and including, 4.5 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

• Garrettgrimm Simple Popup Plugin: up to and including 4.5

Published 2024-09-28. Last modified 2026-06-17.