CVE detail
CVE-2026-15790
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.
Buzz score
Why this CVE is surfacing
This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.
Buzz score components · mention 13.9 · diversity 6.5 · KEV 0.0 · OTX 0.0 · PoC 0.0
Why it matters now
Mention timeline
- Total mentions
- 3
- within the 30d window
- Peak daily
- 3
- highest bucket
Evidence
Source links by recency
3 source links · newest first
- https://www.wordfence.com/threat-intel/vulnerabilities/id/3be5e544-1ea5-46f6-a15b-99b0e3718c91?source=cvewww.wordfence.com
No excerpt available.
Patchwww.wordfence.comAug 16, 2026, 6:16 AM - https://plugins.trac.wordpress.org/browser/youtube-showcase/tags/4.0.4/assets/ext/emd-meta-box/inc/helpers.php#L72plugins.trac.wordpress.org
No excerpt available.
Patchplugins.trac.wordpress.orgAug 16, 2026, 6:16 AM - https://plugins.trac.wordpress.org/browser/youtube-showcase/tags/4.0.4/assets/ext/emd-meta-box/inc/helpers.php#L274plugins.trac.wordpress.org
No excerpt available.
Patchplugins.trac.wordpress.orgAug 16, 2026, 6:16 AM
Exploit code
Public exploit repository references
Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.
0 repository references · best confidence N/A · max 0 stars
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