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GD bbPress 2.5 Cross Site Scripting

GD bbPress 2.5 Cross Site Scripting
Posted May 14, 2018
Authored by Luigi Gubello

GD bbPress versions 2.5 and below suffer from a cross site scripting vulnerability.

tags | exploit, xss
MD5 | 087c655ff43ee9dfeea459aa735151b0

GD bbPress 2.5 Cross Site Scripting

Change Mirror Download
An authenticated user of a bbPress forum, who can attach a file, can inject arbitrary javascript code via filename. The arbitrary code runs both on the topic page and in the admin panel, and it only affects the administrators, moderators and the attacker.

The variable $error[afilea] in /code/attachments/front.php (line 349) is not escaped.

Public disclosure: https://www.gubello.me/blog/gd-bbpress-attachments-2-5-authenticated-stored-xss/
Video PoC: https://www.youtube.com/watch?v=n4xX0ODV1O4

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