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MyBB Hide Thread Content 1.0 Information Disclosure

MyBB Hide Thread Content 1.0 Information Disclosure
Posted Jan 29, 2021
Authored by 0xB9

MyBB Hide Thread Content plugin version 1.0 suffers from an information leakage vulnerability.

tags | exploit, info disclosure
advisories | CVE-2021-3337
MD5 | 5ea0716da4a40b02a22d5f6e4ac35f6e

MyBB Hide Thread Content 1.0 Information Disclosure

Change Mirror Download
# Exploit Title: MyBB Hide Thread Content Plugin 1.0 - Information Disclosure
# Date: 1/27/2021
# Author: 0xB9
# Twitter: @0xB9Sec
# Contact: 0xB9[at]pm.me
# Software Link: https://community.mybb.com/mods.php?action=view&pid=1430
# Version: 1.0
# Tested on: Windows 10
# CVE: CVE-2021-3337

1. Description:
This plugin hides thread content until user replies to the thread. The information disclosure is hidden content can be viewed without replying.

2. Proof of Concept:

- Visit a post where content is hidden
- Click the reply or quote button below
Thread content will be displayed in the [quote] bracket without needing to reply

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