PT-2026-36965 · Shapedplugin · Carousel

Craig Smith · Published 2026-05-05 · Updated 2026-05-05 · CVE-2026-4665

NVD

CVSS v3.1

6.4

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

The WP Carousel Free plugin for WordPress is vulnerable to Stored Cross-Site Scripting via crafted fancybox data-caption attributes in all versions up to, and including, 2.7.10. This is due to the fancybox-config.js script reading the carousel container's id attribute directly from the DOM to construct a jQuery selector without sanitization. When a Contributor crafts an HTML block with a malformed carousel container ID (containing characters invalid for jQuery selectors), the custom fancybox configuration throws a JavaScript error and fails to initialize. This causes the bundled fancybox library (v3.5.7) to fall back to its default caption handling, which renders the data-caption attribute content as raw HTML. Since WordPress allows data-* attributes through wp kses post(), 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 clicks an image in the crafted carousel lightbox.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-4665

Affected Products

Carousel

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2026-4665 · Security Note
• https://wordfence.com/threat-intel/vulnerabilities/id/e75815a3-2414-47f3-b0c4-e5d3e2cb369d?source=cve · Note
• https://plugins.trac.wordpress.org/browser/wp-carousel-free/tags/2.7.10/public/js/fancybox-config.js#L3 · Note
• https://plugins.trac.wordpress.org/browser/wp-carousel-free/trunk/public/js/fancybox-config.js#L3 · Note
• https://plugins.trac.wordpress.org/changeset/3506878/wp-carousel-free/trunk/public/js/fancybox.js · Note