CVE-2026-3299 MEDIUM

CVE-2026-3299: WP YouTube Lyte <= 1.7.29 - Authenticated (Contributor+) Stored Cross-Site Scripting via lyte Shortcode

Vendor Futtta
Product WP YouTube Lyte
Weakness CWE-79 · XSS
Published April 16, 2026
Last update April 16, 2026

CVSS base score

6.4/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality Low
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

What the vulnerability does

01Description

The WP YouTube Lyte plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'lyte' shortcode in all versions up to, and including, 1.7.29 due to insufficient input sanitization and output escaping on user supplied attributes. 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.

Explanation of Vulnerability in Simple Terms

02Summary

WP YouTube Lyte versions up to 1.7.29 contain a cross-site scripting vulnerability that allows authenticated users to inject malicious scripts. The vulnerability has a changed scope, meaning the impact can extend beyond the plugin itself. Site administrators should update to a version newer than 1.7.29 to remediate this issue.

What an attacker can do

03Attacker Capabilities

Inject malicious JavaScript that affects other users or site functionality.

Potential impact on your site

04Site Impact

Authenticated attackers can inject scripts affecting site visitors or other users' sessions.

Conditions required to exploit

05Prerequisites

Attacker must have a WordPress user account with at least low-level privileges.

Key dates

06Disclosure timeline

April 16, 2026 CVE published
April 16, 2026 Record updated