Cross-Site Scripting via 'fname' parameter in ███

How it was found

Description: Hi, team! I discovered a Cross-Site Scripting (XSS) vulnerability on ███ , specifically through the GET method. This vulnerability allows an attacker to inject malicious scripts that could be executed, potentially leading to cookie theft, session hijacking, and other malicious actions.

Vulnerable parameter: fname Payload: "'><A HRef=" AutoFocus OnFocus=;1^(print)``^1>"

References

████████

Impact

Exploitation of this vulnerability can lead to severe consequences, including but not limited: Session Hijacking: Attackers can steal cookies and impersonate legitimate users.

System Host(s)

███████

Affected Product(s) and Version(s)

CVE Numbers

Steps to Reproduce

Open the link:

███?ReqType=news&fname=2013.026.jpg%22%27%3E%3CA%20HRef%3d%22%20AutoFocus%20OnFocus=;1^(print)``^1%3E%22&title=%E2%80%9CCandy%20Bomber%E2%80%9D%20passes%20away%20at%20101

I used the 'print' function to bypass the firewall.

Suggested Mitigation/Remediation Actions

Apply context-dependent encoding and/or validation to user input rendered on a page.