MyBB Hide Thread Content 1.0 Information Disclosure

CVE Category Price Severity
CVE-2021-3337 CWE-200 $500 Critical
Author Risk Exploitation Type Date
Unknown High Remote 2021-01-29
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N 0.02192 0.50148

CVSS vector description

Our sensors found this exploit at:

Below is a copy:

MyBB Hide Thread Content 1.0 Information Disclosure
# Exploit Title: MyBB Hide Thread Content Plugin 1.0 - Information Disclosure
# Date: 1/27/2021
# Author: 0xB9
# Twitter: @0xB9Sec
# Contact: 0xB9[at]
# Software Link:
# 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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