**Source : Help Net Security | 6 octobre 2026** Attackers who know where to look can read files from Atlassian Data Center installations without logging in, the company has warned. About CVE-2026-21589 CVE-2026-21589, a critical arbitrary file access vulnerability with a 9.3 CVSS score, affects all versions of Bitbucket Data Center, Confluence Data Center, Jira Service Management Data Center, Jira Software Data Center, Bamboo Data Center, Crowd... 👉 **Lire l'article complet sur Help Net Security :** [https://www.helpnetsecurity.com/2026/10/06/atlassian-data-center-cve-2026-21589/](https://www.helpnetsecurity.com/2026/10/06/atlassian-data-center-cve-2026-21589/)