Learn how fat GET requests enable web cache poisoning by exploiting mismatched cache key handling, and why this vulnerability can escalate into widespread XSS and cache-based attacks.
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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.
Table of Contents
Summary of the Vulnerability
In this scenario, the application accepts GET requests that contain a message body. While GET requests are traditionally expected to be body-less, some servers and frameworks still allow them. The critical flaw lies in how the cache mechanism processes these requests: it…