CVE-2022-21826 Information

Description

Pulse Secure version 9.115 and below may be susceptible to client-side http request smuggling When the application receives a POST request it ignores the request’s Content-Length header and leaves the POST body on the TCP/TLS socket. This body ends up prefixing the next HTTP request sent down that connection this means when someone loads website attacker may be able to make browser issue a POST to the application enabling XSS.

Reference

https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/Client-Side-Desync-Attack/