Threat actors have begun to exploit a newly disclosed critical security flaw impacting Atlassian Data Center products that could allow access to sensitive files under certain conditions.

The arbitrary file access flaw, tracked as CVE-2026-21589 (CVSS score: 9.3) affects multiple products, including Bitbucket Data Center, Confluence Data Center, Jira Service Management Data Center, Jira Software…

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Source: The Hacker News

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