CVE-2021-47934
MEDIUM
NVD
CVSS Score
5.3
Severity
MEDIUM
Published
May 16, 2026
Vendor
unknown
Description
MyBB Timeline Plugin 1.0 contains cross-site scripting vulnerabilities that allow attackers to inject malicious scripts through thread titles, post content, and user profile fields like Location and Bio. Attackers can also exploit a cross-site request forgery vulnerability in the timeline.php profile action to change a user's cover picture by crafting malicious forms that execute when victims visit affected profiles.