Crucible Data Center

Atlassian has a critical vulnerability, tracked as EUVD-2026-92807, affecting a range of its enterprise products including Bitbucket Data Center, Crowd Server, Crucible Data Center, Confluence Data Center and Jira Service Management. The flaw carries a CVSS v3.1 severity score of 9.3 out of 10, putting it in the critical range. The advisory was updated on 5 October 2026, and security teams are being urged to check whether their deployments of the affected Atlassian products are exposed.