An issue was discovered in GitLab Community and Enterprise Edition before 11.1.7, 11.2.x before 11.2.4, and 11.3.x before 11.3.1. There is Server-Side Request Forgery (SSRF) via a loopback address to the validatelocalhost function in urlblocker.rb.
{
"versions": [
{
"introduced": "0"
},
{
"fixed": "11.1.7"
},
{
"introduced": "0"
},
{
"fixed": "11.1.7"
},
{
"introduced": "11.2.0"
},
{
"fixed": "11.2.4"
},
{
"introduced": "11.2.0"
},
{
"fixed": "11.2.4"
},
{
"introduced": "0"
},
{
"last_affected": "11.3.0"
},
{
"introduced": "0"
},
{
"last_affected": "11.3.0"
}
]
}