Typecho v1.2.1 was discovered to be vulnerable to an XML Quadratic Blowup attack via the component /index.php/action/xmlrpc.
{
"versions": [
{
"introduced": "0"
},
{
"last_affected": "1.2.1-NA"
},
{
"introduced": "0"
},
{
"last_affected": "1.2.1-rc"
}
]
}