Software Update: GitLab 11.10.2 / 11.9.10 / 11.8.9

You can compare GitLab with the more famous GitHubbut contains some subtle differences. It is an environment for managing Git repositories on-premises. It is published under the MIT Expat License and developed in Ruby on Rails. It is available in two versions, the free-to-use Community Edition and a paid Enterprise Edition, with more features aimed at large businesses. The two flavors are on this page explained. The development team has released GitLab 11.10.2, 11.9.10, and 11.8.9 with the following announcement:

GitLab Security Release: 11.10.2, 11.9.10, and 11.8.9

Today we are releasing versions 11.10.2, 11.9.10, and 11.8.9 for GitLab Community Edition (CE) and Enterprise Edition (EE). These versions contain important security fixes, and we strongly recommend that all GitLab installations be upgraded to one of these versions immediately. The vulnerability details will be made public on our issue tracker in approximately 30 days. Please read on for more information regarding this release.

Moving an Issue to Private Repo Leaks Project Namespace
When an issue was moved to a private project, the private project namespace was leaked to unauthorized users with access to the original issue. The issue is now mitigated in the latest release and is assigned CVE-2019-11545. Thanks to @xanbanx for responsibly reporting this vulnerability to us.
Versions Affected : Affects GitLab CE/EE 11.9 and later.
Remediation : We strongly recommend that all installations running an affected version above are upgraded to the latest version as soon as possible.

Notification Emails Sent to Restricted Users
Non-member users who subscribed to notifications of an internal project with issue and repository restrictions would receive emails about restricted events. The issue is now mitigated in the latest release and is assigned CVE-2019-11544. Thanks to @yashrs for responsibly reporting this vulnerability to us.
Versions Affected : Affects GitLab CE/EE 8.10 and later.
Remediation : We strongly recommend that all installations running an affected version above are upgraded to the latest version as soon as possible.

Unauthorized Comments on Confidential Issues
Unprivileged members of a project were able to post comments on confidential issues through an authorization issue in the note endpoint. The issue is now mitigated in the latest release and is assigned CVE-2019-11548. Thanks to @mishre for responsibly reporting this vulnerability to us.
Versions Affected : Affects GitLab CE/EE 5.4.0 through 11.8.8.
Remediation : We strongly recommend that all installations running an affected version above are upgraded to the latest version as soon as possible.

Merge Request Approval Count Inflation
A Race Condition vulnerability was discovered which could allow users to approve a merge request multiple times and potentially reach the approval count required to merge. The issue is now mitigated in the latest release and is assigned CVE-2019-11546. Thanks to @flashdisk for responsibly reporting this vulnerability to us.
Versions Affected : Affects GitLab CE/EE 8.6 and later.
Remediation : We strongly recommend that all installations running an affected version above are upgraded to the latest version as soon as possible.

Unsanitized Branch Names on New Merge Request Notification Emails
The branch name on new merge request notification emails wasn’t being escaped, which could potentially lead to XSS issues. The issue is now mitigated in the latest release and is assigned CVE-2019-11547. Thanks to @mario-areias for responsibly reporting this vulnerability to us.
Versions Affected : Affects GitLab CE/EE 6.0.0 and later.
Remediation : We strongly recommend that all installations running an affected version above are upgraded to the latest version as soon as possible.

Improper Sanitation of Credentials in Gitaly
Gitaly has been upgraded to fix an information disclosure issue where HTTP/GIT credentials were included in logs on connection errors. The issue is now mitigated in the latest release and is assigned CVE-2019-11549. Thanks to @j-jam for responsibly reporting this vulnerability to us.
Versions Affected : Affects GitLab CE/EE 9.0 and later.
Remediation : We strongly recommend that all installations running an affected version above are upgraded to the latest version as soon as possible.

Upgrade to Rails 5.0.7.2
Ruby on Rails was upgraded to version 5.0.7.2 for the Gitlab 11.10.2 package. This Ruby on Rails release contains several security fixes.