Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Microsoft Internet Explorer 7.0 on Windows XP and Vista allows remote attackers to conduct phishing attacks and possibly execute arbitrary code via a res: URI to navcancl.htm with an arbitrary URL as an argument, which displays the URL in the location bar of the "Navigation Canceled" page and injects the script into the "Refresh the page" link, aka Navigation Cancel Page Spoofing Vulnerability."
CWE-79 - Cross Site Scripting
Cross-Site Scripting, commonly referred to as XSS, is the most dominant class of vulnerabilities. It allows an attacker to inject malicious code into a pregnable web application and victimize its users. The exploitation of such a weakness can cause severe issues such as account takeover, and sensitive data exfiltration. Because of the prevalence of XSS vulnerabilities and their high rate of exploitation, it has remained in the OWASP top 10 vulnerabilities for years.