In all versions of GitLab EE since version 8.13, an endpoint discloses names of private groups that have access to a project to low privileged users that are part of that project.
{
"versions": [
{
"introduced": "8.13.0"
},
{
"fixed": "14.1.7"
},
{
"introduced": "8.13.0"
},
{
"fixed": "14.1.7"
},
{
"introduced": "14.2.0"
},
{
"fixed": "14.2.5"
},
{
"introduced": "14.2.0"
},
{
"fixed": "14.2.5"
},
{
"introduced": "14.3.0"
},
{
"fixed": "14.3.1"
},
{
"introduced": "14.3.0"
},
{
"fixed": "14.3.1"
}
]
}