A open redirect vulnerability exists in Action Pack >= 6.0.0 that could allow an attacker to craft a "X-Forwarded-Host" headers in combination with certain "allowed host" formats can cause the Host Authorization middleware in Action Pack to redirect users to a malicious website.
{
"versions": [
{
"introduced": "0"
},
{
"last_affected": "6.0.4.2"
},
{
"introduced": "0"
},
{
"last_affected": "6.1.4.2"
},
{
"introduced": "0"
},
{
"last_affected": "7.0.0-rc2"
}
]
}