What the vulnerability does
01Description
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.
Explanation of Vulnerability in Simple Terms
02Summary
Slider Bootstrap Carousel versions 1.0.7 and earlier contain a cross-site scripting (XSS) vulnerability. An authenticated user with low privileges can inject malicious scripts that execute in other users' browsers, potentially affecting the entire site. The vulnerability requires network access but no user interaction from the victim.
What an attacker can do
03Attacker Capabilities
Inject malicious JavaScript that runs in other users' browsers and affects the entire site.
Potential impact on your site
04Site Impact
Authenticated users can inject scripts affecting all site visitors, risking credential theft, malware distribution, or site defacement.
Conditions required to exploit
05Prerequisites
Attacker must have a low-privilege authenticated account; no victim interaction required.
Key dates
06Disclosure timeline
April 22, 2026
CVE published
April 22, 2026
Record updated
