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CVE-2020-13936 PoC — Velocity Sandbox Bypass

Source
https://github.com/Threekiii/Awesome-POC/blob/master/%E4%B8%AD%E9%97%B4%E4%BB%B6%E6%BC%8F%E6%B4%9E/Apache%20Velocity%20%E8%BF%9C%E7%A8%8B%E4%BB%A3%E7%A0%81%E6%89%A7%E8%A1%8C%20CVE-2020-13936.md
Associated Vulnerability
Title:Velocity Sandbox Bypass (CVE-2020-13936)
Description:An attacker that is able to modify Velocity templates may execute arbitrary Java code or run arbitrary system commands with the same privileges as the account running the Servlet container. This applies to applications that allow untrusted users to upload/modify velocity templates running Apache Velocity Engine versions up to 2.2.
File Snapshot

 # Apache Velocity 远程代码执行 CVE-2020-13936

## 漏洞描述

Velocity Uberspector无法阻止访问java.lang.ClassLoader类加载

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