Cross-site scripting in emarket-design Video Gallery – YouTube Gallery, Playlist & Video…
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| emarket-design | Video Gallery – YouTube Gallery, Playlist & Video Grid | up to 4.0.4 | — | No fix listed | CNA |
- Video Gallery – YouTube Gallery, Playlist & Video Grid Vendoremarket-design Affected up to 4.0.4 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-15790
- 2026-10-03 Alias added: GHSA-mwqg-cv4p-5r7g
References
Other 3
- https://www.wordfence.com/threat-intel/vulnerabilities/id/3be5e544-1ea5-46f6-a15b-99b0e3718c91?source=cve
- https://plugins.trac.wordpress.org/browser/youtube-showcase/tags/4.0.4/assets/ext/emd-meta-box/inc/helpers.php#L72
- https://plugins.trac.wordpress.org/browser/youtube-showcase/tags/4.0.4/assets/ext/emd-meta-box/inc/helpers.php#L274
More emarket-design vulnerabilities
- TI-2024-05779 Request a Quote < 2.4.1 - Admin+ Stored XSS CVSS 3.1MEDIUM 5.9
- TI-2026-12634 Customer Support Ticket System & Helpdesk <= 6.0.5 - Unauthenticated Code Injection via 'path' Parameter CVSS 3.1CRITICAL 9.8
- TI-2026-08619 WP Ticket <= 6.0.4 - Unauthenticated SQL Injection via WordPress Search 's' Parameter CVSS 3.1HIGH 7.5
- TI-2022-02068 Request a Quote <= 2.3.7 - CSV Injection CVSS 3.1HIGH 8.8
- TI-2026-12066 Request a Quote Form Plugin <= 2.5.5 - Unauthenticated Code Injection via 'path' Parameter CVSS 3.1HIGH 7.5
- TI-2025-07706 Multiple Plugins by emarket-design <= Multiple Versions - Unauthenticated Limited Remote Code Execution CVSS 3.1HIGH 8.1
Sources
- CVE-2026-15790 · CVE Program
- CVE-2026-15790 · NVD
- FIRST EPSS
- GHSA-mwqg-cv4p-5r7g · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences