PT-2026-41448 · Mybb · Mybb Timeline Plugin

0Xb9 · Published 2026-05-16 · Updated 2026-05-17 · CVE-2021-47934

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Name of the Vulnerable Software and Affected Versions MyBB Timeline Plugin version 1.0

Description Cross-site scripting issues allow the injection of malicious scripts via thread titles, post content, and user profile fields such as Location and Bio. Additionally, a cross-site request forgery flaw exists in the 'timeline.php' profile action, enabling attackers to change a user's cover picture by crafting malicious forms that execute when victims visit affected profiles.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2021-47934

Affected Products

Mybb Timeline Plugin

References · 6

• 🔥 https://exploit-db.com/exploits/49467 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-47934 · Security Note
• https://vulncheck.com/advisories/mybb-timeline-plugin-cross-site-scripting-and-csrf · Note
• https://t.me/CVEtracker/54002 · Telegram Post
• https://twitter.com/CVEnew/status/2055866583071727704 · Twitter Post
• https://community.mybb.com/mods.php?action=view&pid=1428 · Note