CVE-2026-4076
Received Received - Intake
Stored XSS in Slider Bootstrap Carousel WordPress Plugin

Publication date: 2026-04-22

Last updated on: 2026-04-22

Assigner: Wordfence

Description
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.
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Meta Information
Published
2026-04-22
Last Modified
2026-04-22
Generated
2026-06-16
AI Q&A
2026-04-22
EPSS Evaluated
2026-06-15
NVD
CVE-2026-4076
EUVD
EUVD-2026-24646
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
wp_slider_bootstrap_carousel slider_bootstrap_carousel to 1.0.7 (inc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
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Mitigation Strategies

To mitigate this vulnerability, you should update the Slider Bootstrap Carousel plugin for WordPress to a version later than 1.0.7 where the issue is fixed.

Additionally, restrict Contributor-level and higher user permissions to trusted users only, as the vulnerability requires authenticated users with at least Contributor access to exploit.

If an immediate update is not possible, consider applying input sanitization and output escaping (such as esc_attr()) on the 'category' and 'template' shortcode attributes in the plugin code to prevent script injection.

Executive Summary

The Slider Bootstrap Carousel plugin for WordPress has a Stored Cross-Site Scripting (XSS) vulnerability in versions up to and including 1.0.7. This occurs because the plugin does not properly sanitize or escape user-supplied shortcode attributes named 'category' and 'template'. Specifically, the plugin extracts these attributes and directly outputs them into HTML attributes without applying necessary escaping functions, allowing an attacker with Contributor-level access or higher to inject malicious scripts that execute when users view the affected pages.

Impact Analysis

This vulnerability allows authenticated attackers with Contributor-level access or above to inject arbitrary JavaScript code into pages using the vulnerable plugin. When other users access these pages, the injected scripts execute in their browsers, potentially leading to session hijacking, defacement, unauthorized actions, or theft of sensitive information.

Compliance Impact

The vulnerability allows authenticated attackers with Contributor-level access and above to inject arbitrary web scripts via stored cross-site scripting (XSS) in the Slider Bootstrap Carousel plugin for WordPress. This can lead to unauthorized script execution when users access the injected pages.

Such unauthorized script execution can potentially lead to data exposure or manipulation, which may impact compliance with data protection regulations like GDPR or HIPAA that require safeguarding personal and sensitive information against unauthorized access or alteration.

However, the provided information does not explicitly detail the direct impact on compliance with these standards.

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