CVE-2026-3996: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in sammyb WP Games Embed
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.
AI Analysis
Technical Summary
CVE-2026-3996 is a stored cross-site scripting vulnerability in the WP Games Embed plugin for WordPress, affecting all versions up to and including 0.1beta. The issue stems from improper neutralization of input during web page generation (CWE-79), specifically the lack of input sanitization and output escaping on shortcode attributes such as 'width', 'height', 'src', 'title', 'description', 'game_url', 'main', and 'thumb'. Authenticated users with Contributor-level privileges or higher can inject arbitrary JavaScript that executes in the context of any user viewing the compromised page.
Potential Impact
Successful exploitation allows an authenticated user with Contributor-level access or higher to inject persistent malicious scripts into pages via shortcode attributes. This can lead to unauthorized actions performed on behalf of other users, data theft, or session hijacking. The vulnerability does not affect availability but impacts confidentiality and integrity. The CVSS score of 6.4 reflects a medium severity with network attack vector, low attack complexity, and no user interaction required.
Mitigation Recommendations
No official patch or fix is currently available for this vulnerability. Users should restrict Contributor-level access and above to trusted individuals only. Monitor for updates from the vendor sammyb for any forthcoming patches. Until a fix is released, avoid using the vulnerable shortcode or disable the WP Games Embed plugin if possible to prevent exploitation.
CVE-2026-3996: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in sammyb WP Games Embed
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-3996 is a stored cross-site scripting vulnerability in the WP Games Embed plugin for WordPress, affecting all versions up to and including 0.1beta. The issue stems from improper neutralization of input during web page generation (CWE-79), specifically the lack of input sanitization and output escaping on shortcode attributes such as 'width', 'height', 'src', 'title', 'description', 'game_url', 'main', and 'thumb'. Authenticated users with Contributor-level privileges or higher can inject arbitrary JavaScript that executes in the context of any user viewing the compromised page.
Potential Impact
Successful exploitation allows an authenticated user with Contributor-level access or higher to inject persistent malicious scripts into pages via shortcode attributes. This can lead to unauthorized actions performed on behalf of other users, data theft, or session hijacking. The vulnerability does not affect availability but impacts confidentiality and integrity. The CVSS score of 6.4 reflects a medium severity with network attack vector, low attack complexity, and no user interaction required.
Mitigation Recommendations
No official patch or fix is currently available for this vulnerability. Users should restrict Contributor-level access and above to trusted individuals only. Monitor for updates from the vendor sammyb for any forthcoming patches. Until a fix is released, avoid using the vulnerable shortcode or disable the WP Games Embed plugin if possible to prevent exploitation.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-03-11T17:05:27.131Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 69be1810f4197a8e3b7843c0
Added to database: 3/21/2026, 4:01:20 AM
Last enriched: 4/9/2026, 6:49:40 PM
Last updated: 5/6/2026, 11:26:11 PM
Views: 39
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