Exploit for Products.PluggableAuthService 2.6.0 Open Redirect CVE-2021-21337

## https://sploitus.com/exploit?id=PACKETSTORM:162911
# Exploit Title: Products.PluggableAuthService 2.6.0 - Open Redirect  
# Exploit Author: Piyush Patil  
# Affected Component: Pluggable Zope authentication/authorization framework  
# Component Link: https://pypi.org/project/Products.PluggableAuthService/  
# Version: < 2.6.1  
# CVE: CVE-2021-21337  
# Reference: https://github.com/zopefoundation/Products.PluggableAuthService/security/advisories/GHSA-p44j-xrqg-4xrr  
  
  
--------------------------Proof of Concept-----------------------  
  
1- Goto https://localhost/login  
2- Turn on intercept and click on the login  
3- Change "came_from" parameter value to https://attacker.com  
4- User will be redirected to an attacker-controlled website.  
  
Fix: pip install "Products.PluggableAuthService>=2.6.1"