The $openerinputfield variable in addons/mediapool/pages/index.php in REDAXO 5.6.3 is not effectively filtered and is output directly to the page. The attacker can insert XSS payloads via an index.php?page=mediapool/media&openerinputfield=[XSS] request.
{
"unresolved_ranges": [
{
"vendor_product": "redaxo:redaxo",
"extracted_events": [
{
"last_affected": "5.6.3"
}
],
"cpes": [
"cpe:2.3:a:redaxo:redaxo:5.6.3:*:*:*:*:*:*:*"
],
"source": "CPE_STRING"
}
]
}