Several security issues were fixed in Jinja2.
Olivier Dony discovered that Jinja incorrectly handled str.format. An attacker could possibly use this issue to escape the sandbox. This issue only affected Ubuntu 16.04 LTS. (CVE-2016-10745)
6 June 2019
A security issue affects these releases of Ubuntu and its derivatives:
Several security issues were fixed in Jinja2.
Olivier Dony discovered that Jinja incorrectly handled str.format. An attacker could possibly use this issue to escape the sandbox. This issue only affected Ubuntu 16.04 LTS. (CVE-2016-10745)
Brian Welch discovered that Jinja incorrectly handled str.format_map. An attacker could possibly use this issue to escape the sandbox. (CVE-2019-10906)
The problem can be corrected by updating your system to the following package versions:
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.