Zendesk Samlr before 2.6.2 allows an XML nodes comment attack such as a name_id node with user@example.com followed by <!---->. and then the attacker's domain name.
{
"source": "CPE_RANGE",
"cpe": "cpe:2.3:a:zendesk:samlr:*:*:*:*:*:*:*:*",
"extracted_events": [
{
"introduced": "0"
},
{
"fixed": "2.6.2"
}
]
}