GitLab CE 8.17 and later and EE 8.3 and later have a symlink time-of-check-to-time-of-use race condition that would allow unauthorized access to files in the GitLab Pages chroot environment. This is fixed in versions 11.5.1, 11.4.8, and 11.3.11.
{
"versions": [
{
"introduced": "8.3.0"
},
{
"fixed": "11.3.11"
},
{
"introduced": "8.17.0"
},
{
"fixed": "11.3.11"
},
{
"introduced": "11.3.12"
},
{
"fixed": "11.4.8"
},
{
"introduced": "11.3.12"
},
{
"fixed": "11.4.8"
},
{
"introduced": "11.4.9"
},
{
"fixed": "11.5.1"
},
{
"introduced": "11.4.9"
},
{
"fixed": "11.5.1"
}
]
}