CVE-2021-47934

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.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://community.mybb.com/mods.php?action=view&pid=1428
https://www.exploit-db.com/exploits/49467
https://www.vulncheck.com/advisories/mybb-timeline-plugin-cross-site-scripting-and-csrf

Configurations

No configuration.

History

No history.

Information

Published : 2026-05-16 16:16

Updated : 2026-06-17 04:18

NVD link : CVE-2021-47934

Mitre link : CVE-2021-47934

CVE.ORG link : CVE-2021-47934

JSON object : View

Products Affected

No product.

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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