Slider Bootstrap Carousel <= 1.0.7 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes

Summary

The Slider Bootstrap Carousel plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'category' and 'template' shortcode attributes in all versions up to and including 1.0.7. This is due to insufficient input sanitization and output escaping on user-supplied shortcode attributes. The plugin uses extract() on shortcode_atts() to parse attributes, then directly outputs the $category variable into multiple HTML attributes (id, data-target, href) on lines 38, 47, 109, and 113 without applying esc_attr(). Similarly, the $template attribute flows into a class attribute on line 93 without 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.

Timeline

1. Apr 22, 2026, 7:45 AM UTCCVE published
2. Apr 22, 2026, 12:14 PM UTCCISA SSVC assessment

   Exploitation: none · Automatable: no · Technical impact: partial

3. Apr 22, 2026, 12:15 PM UTCRecord last updated

Affected versions

• felipermendes Slider Bootstrap Carousel

  through 1.0.7

References 13