This High severity Third-Party Dependency vulnerability was introduced in versions 5.1.11, 5.2.6, 5.3.2, and 6.0.0 of Crowd Data Center.

This Third-Party Dependency vulnerability, with a CVSS Score of 7.5, allows an unauthenticated attacker to expose assets in your environment susceptible to exploitation which has no impact to confidentiality, no impact to integrity, high impact to availability, and requires no user interaction.

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

• Crowd Data Center 5.2: Upgrade to a release greater than or equal to 5.2.9

• Crowd Data Center 5.3: Upgrade to a release greater than or equal to 5.3.5

• Crowd Data Center 6.0: Upgrade to a release greater than or equal to 6.0.3

• Crowd Data Center 6.1: Upgrade to a release greater than or equal to 6.1.1

See the release notes (https://confluence.atlassian.com/crowd/crowd-release-notes-199094.html). You can download the latest version of Crowd Data Center from the download center (https://www.atlassian.com/software/crowd/download-archive).

This vulnerability was reported via our Atlassian (Internal) program.