What the vulnerability does
01Description
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in LambertGroup HTML5 Video Player lbg-vp2-html5-bottom allows Reflected XSS.This issue affects HTML5 Video Player: from n/a through <= 5.3.5.
Explanation of Vulnerability in Simple Terms
02Summary
The HTML5 Video Player contains a cross-site scripting (XSS) vulnerability in versions up to 5.3.5. An attacker can inject malicious scripts that execute in a visitor's browser when they view a page containing the player. The vulnerability requires user interaction and can affect other parts of the site due to scope change. Update to a version newer than 5.3.5 to remediate.
What an attacker can do
03Attacker Capabilities
Inject and execute malicious JavaScript in visitors' browsers, potentially stealing session data or redirecting users.
Potential impact on your site
04Site Impact
Visitors' browsers can be compromised; session tokens, cookies, or form data may be stolen or modified.
Conditions required to exploit
05Prerequisites
Visitor must view a page containing the vulnerable player; attacker needs network access to inject the payload.
Key dates
06Disclosure timeline
January 22, 2026
CVE published
April 28, 2026
Record updated