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.

References

• https://nvd.nist.gov/vuln/detail/CVE-2020-7050
• https://codologic.com/forum/index.php?u=/topic/12638/codoforum-4-8-8-released-and-the-future#post-23845
• https://www.linkedin.com/posts/polina-voronina-896819b5_discovered-by-polina-voronina-jan-15-activity-6634436086540054528-dDgg/