GitLab EE 3.0 through 12.8.1 allows SSRF. An internal investigation revealed that a particular deprecated service was creating a server side request forgery risk.
GitLab before 12.8.2 allows Information Disclosure. Badge images were not being proxied, causing mixed content warnings as well as leaking the IP address of the user.
GitLab before 12.8.2 has Incorrect Access Control. It was internally discovered that the LFS import process could potentially be used to incorrectly access LFS objects not owned by the user.
An issue was discovered in GitLab Community and Enterprise Edition before 12.0.3. One of the parsers used by Gilab CI was vulnerable to a resource exhaustion attack. It allows Uncontrolled Resource Consumption.