URL Redirection to Untrusted Site ('Open Redirect')
Open redirect vulnerability in cgiemail and cgiecho allows remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via vectors involving the (1) success or (2) failure parameter.
CWE-601 - Open Redirect
An open redirect attack employs a URL parameter, HTML refresh tags, or a DOM based location change to exploit the trust of a vulnerable domain to direct the users to a malicious website. The attack could lead to higher severity vulnerabilities such as unauthorized access control, account takeover, XSS, and more.