Related Vulnerabilities: CVE-2021-39889  

In all versions of GitLab EE since version 14.1, due to an insecure direct object reference vulnerability, an endpoint may reveal the protected branch name to a malicious user who makes a crafted API call with the ID of the protected branch.

Severity Medium

Remote Yes

Type Information disclosure

Description

In all versions of GitLab EE since version 14.1, due to an insecure direct object reference vulnerability, an endpoint may reveal the protected branch name to a malicious user who makes a crafted API call with the ID of the protected branch.

AVG-2432 gitlab 14.3.0-1 High Not affected

https://about.gitlab.com/releases/2021/09/30/security-release-gitlab-14-3-1-released/#insecure-direct-object-reference-vulnerability-may-lead-to-protected-branch-names-getting-disclosed
https://hackerone.com/reports/1294017
https://gitlab.com/gitlab-org/gitlab/-/issues/338062