An issue was discovered in Joomla! before 3.9.3. A combination of specific web server configurations, in connection with specific file types and browser-side MIME-type sniffing, causes an XSS attack vector.
{
"cpe": "cpe:2.3:a:joomla:joomla\\!:*:*:*:*:*:*:*:*",
"extracted_events": [
{
"introduced": "1.0.0"
},
{
"last_affected": "3.9.2"
}
],
"source": "CPE_RANGE"
}