The $opener_input_field 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&opener_input_field=[XSS] request.
{
"extracted_events": [
{
"cpe": "cpe:2.3:a:redaxo:redaxo:5.6.3:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.3"
},
{
"last_affected": "5.6.3"
}
],
"source": "CPE_STRING"
},
{
"original_tag": "5.6.4",
"range": [
{
"fixed": "1094cf912ec7e82982505ca23f322ad12337fb25"
}
],
"source": "REFERENCES_TAG"
}
]
}