Video Gallery <= 4.0.4 - Authenticated (Author+) Stored Cross-Site Scripting via Attachment 'post_title' via emd_mb_meta Shortcode
| CVE | CVE-2026-15790 |
|---|---|
| CVSS | 6.4 (Medium) |
| Publicly Published | August 15, 2026 |
| Last Updated | August 16, 2026 |
| Researcher |
Wordfence PRISM
- Wordfence
|
Description
The Youtube Showcase plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 4.0.4 via the 'emd_mb_meta' shortcode. This is due to insufficient input sanitization and output escaping on attachment titles referenced by the shortcode's image field: EMD_MB_Helper::image_info() returns the attachment's raw post_title, and EMD_MB_Helper::shortcode() interpolates it into title="%s" HTML attributes via sprintf() without esc_attr(). This makes it possible for authenticated attackers, with author-level access and above (upload_files capability required to create the attachment, edit_posts/publish_posts to embed the shortcode), to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Learn more about Cross-Site Scripting vulnerabilities and how to prevent them.
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Vulnerability Details for Video Gallery – YouTube Gallery, Playlist & Video Grid
| Software Type | Plugin |
|---|---|
| Software Slug | youtube-showcase (view on wordpress.org) |
| Patched? | Yes |
| Remediation | Update to version 4.0.5, or a newer patched version |
| Affected Version |
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| Patched Version |
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Recent vulnerabilities in Video Gallery – YouTube Gallery, Playlist & Video Grid
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