CVE-2026-8873

Description

The Content Slideshow plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Shortcode Attributes in all versions up to, and including, 2.4.1 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.

References

• https://plugins.trac.wordpress.org/browser/content-slideshow/tags/2.4.1/slideshow-widget-shortcode.php#L14
• https://plugins.trac.wordpress.org/browser/content-slideshow/tags/2.4.1/slideshow-widget-shortcode.php#L143
• https://www.wordfence.com/threat-intel/vulnerabilities/id/9548f647-9fcb-481c-874e-0184609283fe?source=cve