MyBB Hide Thread Content 1.0 Information Disclosure

2021.01.29
Credit: 0xB9
Risk: Low
Local: No
Remote: Yes
CWE: CWE-863


CVSS Base Score: 5/10
Impact Subscore: 2.9/10
Exploitability Subscore: 10/10
Exploit range: Remote
Attack complexity: Low
Authentication: No required
Confidentiality impact: Partial
Integrity impact: None
Availability impact: None

# 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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