GitHub Enterprise - The best way to build and ship software

The 2.18 series release notes contain important changes in this release series.

Bug Fixes

SAML Authentication requests and Metadata were not strictly encoded, causing some Identity Providers to not correctly process Service Provider initiated Authentication requests.
When using GitHub Connect, the GHES license sync process sent information that was not required.
ghe-migrator exports did not contain milestone users, which could break import operations.
When viewing file changes in comparison views, long file paths were truncated in a way that emphasised the directory components, rather than the filename.

On a freshly set up GitHub Enterprise Server without any users, an attacker could create the first admin user.
Custom firewall rules are not maintained during an upgrade.
Subversion (SVN) checkout may timeout while the repository data cache is being built. In most cases, subsequent Subversion checkout attempts will succeed.
Git LFS tracked files uploaded through the web interface are incorrectly added directly to the repository.
Issues cannot be closed if they contain a permalink to a blob in the same repository where the file path is longer than 255 characters.
When "Users can search GitHub.com" is enabled with GitHub Connect, issues in private and internal repositories are not included in GitHub.com search results.
Security alerts are not reported when pushing to a repository on the command line. (updated 2020-06-23)

Thanks!

The GitHub Team