CVE-2021-47934
Medium
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.
SeverityMedium
CVSS5.3
Exploit probability—
Product
MyBB Timeline Plugin
PublishedMay 16, 2026
First seenMay 16, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| MyBB MyBB Timeline Plugin | 1.0 | — |
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