Learn how a stored XSS flaw can be weaponized to defeat CSRF defenses and perform unauthorized actions on behalf of users.
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Disclaimer:
The techniques described in this document are intended solely for ethical use and educational purposes. Unauthorized use of these methods outside approved environments is strictly prohibited, as it is illegal, unethical, and may lead to severe consequences.It is crucial to act responsibly, comply with all applicable laws, and adhere to established ethical guidelines. Any activity that exploits security vulnerabilities or compromises the safety, privacy, or integrity of others is strictly forbidden.
The PortSwigger lab, “Exploiting cross-site scripting to perform CSRF”, demonstrates a real-world scenario where a stored XSS vulnerability in a blog comment section can be leveraged to bypass CSRF protections.
In this lab, a logged-in user (like an admin or another user) views a malicious comment containing…