In GitLab before 13.0.12, 13.1.6 and 13.2.3 using a branch with a hexadecimal name could override an existing hash.
{
"severity": "High",
"cpes": [
"cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*",
"cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*"
]
}