## Bug Fixes

- Fixed issues adding cookbook constraints to an environment.
- Fixed errors when changing a node's environment.
- Fixed incorrect cookbook versions being displayed in environments.
- Fixed a blank page being shown when refreshing the databag item page.

## Ubuntu 20.04 Support

We added Ubuntu 20.04 packages and continue to support Ubuntu 16.04 and 18.04 packages.

## Dependency Updates

- Embedded Chef Infra Client is upgraded from 14 to 15
- Sidekiq is upgraded from 4.2.10 to 5.2.9

## Security Updates

### Ruby 2.6

We updated Chef Manage's Ruby installation from 2.5.5 to 2.6.6. This upgrade improves the performance of the application and resolves the following CVEs:

- [CVE-2012-6708](https://nvd.nist.gov/vuln/detail/CVE-2012-6708)
- [CVE-2015-9251](https://nvd.nist.gov/vuln/detail/CVE-2015-9251)
- [CVE-2019-16255](https://nvd.nist.gov/vuln/detail/CVE-2019-16255)
- [CVE-2019-16254](https://nvd.nist.gov/vuln/detail/CVE-2019-16254)
- [CVE-2019-15845](https://nvd.nist.gov/vuln/detail/CVE-2019-15845)
- [CVE-2019-16201](https://nvd.nist.gov/vuln/detail/CVE-2019-16201)
- [CVE-2020-10663](https://nvd.nist.gov/vuln/detail/CVE-2020-10663)
- [CVE-2020-10933](https://nvd.nist.gov/vuln/detail/CVE-2020-10933)

### OpenSSL

We updated OpenSSL from 1.0.2u to 1.0.2w to resolve [CVE-2020-1968](https://nvd.nist.gov/vuln/detail/CVE-2020-1968).

### Rack

We updated the Rack gem used in Chef Manage from 2.0.9 to 2.2.3 to resolve [CVE-2020-8184](https://nvd.nist.gov/vuln/detail/CVE-2020-8184).

### Rails

We updated the  Rails engine used in Chef Manage from 5.2.4.2 to 5.2.4.4 to resolve [CVE-2020-15169](https://nvd.nist.gov/vuln/detail/CVE-2020-15169).