Kunena before 5.0.4 does not restrict avatar file extensions to gif, jpeg, jpg, and png. This can lead to XSS and remote code execution.
{
"extracted_events": [
{
"introduced": "0"
},
{
"fixed": "5.0.4"
}
],
"source": "CPE_RANGE",
"cpe": "cpe:2.3:a:kunena:kunena:*:*:*:*:*:joomla\\!:*:*"
}