If you’re self-hosting an Atlassian Confluence Server or Data Center installation, you should upgrade to the latest available version to fix a high-severity RCE flaw (CVE-2024-21683) for which a PoC and technical details are already public. About CVE-2024-21683 Confluence Server and Data Center are software solutions that are widely used in enterprise settings to manage knowledge bases, documentation, and standardize collaboration.

Source: Help Net Security