This High severity Third-Party Dependency vulnerability was introduced in versions 8.20.0, 9.4.0, 9.6.0, 9.7.0, 9.8.0, 9.9.0, 9.10.0, and 9.11.0 of Jira Software Data Center and Server.

This Third-Party Dependency vulnerability, with a CVSS Score of 7.1 and a CVSS Vector of CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N allows an authenticated attacker to expose assets in your environment susceptible to exploitation which has high impact to confidentiality, high impact to integrity, no impact to availability, and requires no user interaction.

Atlassian recommends that Jira Software Data Center and Server customers upgrade to latest version, if you are unable to do so, upgrade your instance to one of the specified supported fixed versions:

• Jira Software Data Center and Server 9.11: Upgrade to a release greater than or equal to 9.11.3

See the release notes. You can download the latest version of Jira Software Data Center and Server from the download center.

The National Vulnerability Database provides the following description for this vulnerability: Use of Java's default temporary directory for file creation in `FileBackedOutputStream` in Google Guava versions 1.0 to 31.1 on Unix systems and Android Ice Cream Sandwich allows other users and apps on the machine with access to the default Java temporary directory to be able to access the files created by the class.

Even though the security vulnerability is fixed in version 32.0.0, we recommend using version 32.0.1 as version 32.0.0 breaks some functionality under Windows.