CVE-2026-3299
Stored XSS in WP YouTube Lyte Plugin Allows Script Injection
Publication date: 2026-04-16
Last updated on: 2026-04-16
Assigner: Wordfence
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| wp_youtube_lyte | wp_youtube_lyte | to 1.7.29 (inc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-79 | The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. |
Attack-Flow Graph
AI Powered Q&A
What immediate steps should I take to mitigate this vulnerability?
To mitigate this vulnerability, you should update the WP YouTube Lyte plugin to a version later than 1.7.29 where the issue is fixed.
Additionally, restrict contributor-level access and above to trusted users only, as the vulnerability requires authenticated users with such privileges to exploit.
Can you explain this vulnerability to me?
The WP YouTube Lyte plugin for WordPress has a Stored Cross-Site Scripting (XSS) vulnerability in its 'lyte' shortcode. This vulnerability exists in all versions up to and including 1.7.29 because the plugin does not properly sanitize or escape user-supplied attributes. As a result, authenticated users with contributor-level access or higher can inject malicious scripts into pages, which will execute whenever any user views those pages.
How can this vulnerability impact me? :
This vulnerability allows attackers with contributor-level access or above to inject arbitrary scripts into web pages. These scripts can execute in the context of other users visiting the affected pages, potentially leading to theft of user credentials, session hijacking, defacement, or other malicious actions. Because the vulnerability is a Stored XSS, the malicious code persists on the site and affects all users who access the injected content.