# All-in-One Video Gallery <= 4.9.7 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes

- **ID:** WPSEC-2026-1496
- **Plugin:** All-in-One Video Gallery – Video Player & Galleries for YouTube, Vimeo & Self-Hosted Videos (`all-in-one-video-gallery`), https://wordpress.org/plugins/all-in-one-video-gallery/
- **Affected versions:** all versions before 5.0.0
- **Fixed in:** 5.0.0 (Update to 5.0.0 or later.)
- **Severity:** Medium 6.4 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N)
- **Weakness:** CWE-79
- **Usage among sites WPSec scans:** plugin Low, affected versions Low (as of 2026-10-24)
- **Attack surface analysis:** https://attacksurface.wpsec.com/plugin/all-in-one-video-gallery
- **Fix released:** 2026-10-22
- **Published:** 2026-10-23
- **URL:** https://wpsec.com/vuln/WPSEC-2026-1496/

## Description

The All-in-One Video Gallery plugin for WordPress is vulnerable to Stored Cross-Site Scripting via shortcode attributes such as 'more_link' in all versions up to, and including, 4.9.7 due to insufficient output escaping: URLs were placed into inline onclick JavaScript strings using only esc_url(), allowing HTML-encoded quotes to break out, and video tag attributes were combined into HTML without escaping keys or values. 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.

## References

- https://wpsec.com/vuln/WPSEC-2026-1496/
- https://plugins.svn.wordpress.org/all-in-one-video-gallery/tags/5.0.0/
- https://wordpress.org/plugins/all-in-one-video-gallery/

Source: WPSec, https://wpsec.com/vuln/WPSEC-2026-1496/

License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Free to use, share and adapt, also commercially, if you credit WPSec and link to this advisory.