Only the [latest version](https://github.com/BookStackApp/BookStack/releases) of BookStack is supported.
We generally don't support older versions of BookStack due to maintenance effort and
since we aim to provide a fairly stable upgrade path for new versions.
## Security Notifications
If you'd like to be notified of new potential security concerns you can [sign-up to the BookStack security mailing list](https://updates.bookstackapp.com/signup/bookstack-security-updates).
## Reporting a Vulnerability
If you've found an issue that likely has no impact to existing users (For example, in a development-only branch)
feel free to raise it via a standard GitHub bug report issue.