CVE-2026-82883: Marcus Login With AJAX

High severity, CVSS 7.1. EPSS: 0.3% chance of exploitation in the next 30 days.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Marcus Login With Ajax allows Reflected XSS. This issue affects Login With Ajax: from n/a through 4.5.1.

Affected products

• Marcus Login With AJAX: up to and including 4.5.1

Published 2026-09-02. Last modified 2026-09-03.