Improper sanitization of branch names in GitLab Runner affecting all versions prior to 15.3.5, 15.4 prior to 15.4.4, and 15.5 prior to 15.5.2 allows a user who creates a branch with a specially crafted name and gets another user to trigger a pipeline to execute commands in the runner as that other user.
{
"severity": "High",
"cpes": [
"cpe:2.3:a:gitlab:runner:*:*:*:*:*:*:*:*"
]
}