Atlassian has disclosed a critical arbitrary file access vulnerability affecting eight products, including Jira, Confluence, and Bitbucket. Tracked as CVE-2026-21589, the flaw has a CVSS score of 9.3. It lets unauthenticated attackers access specific files in an affected application’s web root directory. The advisory, published on October 5, 2026, covers Bitbucket Data Center, Confluence Data […]
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