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In this exercise, the attacker has normal user-level access. However, looks like this access does lead to an XSS attack. So you can try to find this XSS.
MyBB (previously also known as MyBBoard and MyBulletinBoard) is a free, open-source, intuitive, extensible, and incredibly powerful forum software written in PHP. It supports all major forum features like threads, private messages, search profiles, reputation management, warning, etc.
MyBB Upcoming Events plugin Plugin (before 1.33) is vulnerable to Reflected Cross Site Scripting documented in CVE-2019-9650.
CVE is a registered trademark of The MITRE Corporation.
All relevant information to solve this lab is available on the CVE website.
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