content/content.blueprintsevents.php in Symphony CMS 3.0.0 allows XSS via fields['name'] to appendSubheading.
{
"extracted_events": [
{
"cpe": "cpe:2.3:a:getsymphony:symphony:3.0.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "3.0.0"
},
{
"last_affected": "3.0.0"
}
],
"source": "CPE_STRING"
}
]
}