--- title: "GitLab Critical Security Release: 12.2.5, 12.1.9, and 12.0.9" categories: releases author: Ethan Strike author_gitlab: estrike image_title: '/images/blogimages/security-cover-new.png' tags: security --- Today we are releasing versions 12.2.5, 12.1.9, and 12.0.9 for GitLab Community Edition (CE) and Enterprise Edition (EE). These versions contain a number of 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. ## Project Template Functionality Could Be Used to Access Restricted Project Data Project creation using custom group templates had a permission issue that allowed an unauthorized user to clone a project to which they had partial visibility, allowing them to see the restricted information. The issue is now mitigated in the latest release and is assigned [CVE-2019-16170](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-16170). Thanks to [@jobert](https://hackerone.com/jobert) for responsibly reporting this vulnerability to us. ### Versions Affected Affects GitLab EE 11.6 and later. ### Remediation We **strongly recommend** that all installations running an affected version above to be upgraded to the latest version as soon as possible. ## Security Enhancements in GitLab Pages GitLab Pages is updated in this release with several security enhancements to GitLab Pages Access Control. Improvements include use of the `Secure` flag on the session cookie, and shortening of the valid session time. These improvements were identified as part of an internal security review. ### Versions Affected Affects GitLab CE/EE 11.5 and later. ### Remediation We **strongly recommend** that all installations running an affected version above to be upgraded to the latest version as soon as possible. ## Nginx Update We have patched Nginx, which is included in the GitLab Omnibus package for CVE-2019-9511, CVE-2019-9513, and CVE-2019-9516. ## Mattermost Updates We've included respective Mattermost security versions in 12.2, 12.1 and 12.0. For more information, see [Mattermost security updates page](https://about.mattermost.com/security-updates/) ## Updating To update, check out our [update page](/update).