CVE-2020-5842: Codologic Codoforum

Medium severity, CVSS 6.1. EPSS: 1.8% chance of exploitation in the next 30 days.

Codoforum 4.8.3 allows XSS in the user registration page: via the username field to the index.php?u=/user/register URI. The payload is, for example, executed on the admin/index.php?page=users/manage page.

Affected products

• Codologic Codoforum: version 4.8.3 only

Published 2020-01-07. Last modified 2026-06-17.