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.

Codologic Codoforum through 4.8.4 allows stored XSS in the login area. This is relevant in conjunction with CVE-2020-5842 because session cookies lack the HttpOnly flag. The impact is account takeover.

Codoforum 4.8.8 allows self-XSS via the title of a new topic.

Codologic Codoforum through 4.8.4 allows a DOM-based XSS. While creating a new topic as a normal user, it is possible to add a poll that is automatically loaded in the DOM once the thread/topic is opened. Because session cookies lack the HttpOnly flag, it is possible to steal authentication cookies and take over accounts.

Codoforum 4.8.3 allows XSS via a post using parameters display name, title name, or content.

Codoforum 4.8.3 allows XSS in the admin dashboard via a category to the Manage Users screen.

Codoforum 4.8.3 allows XSS in the admin dashboard via a name field of a new user, i.e., on the Manage Users screen.