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CVE-2026-21589 | Atlassian Data Center Products Unauthenticated Arbitrary File Read Vulnerability

calendar_today October 6, 2026 person Horizon3 domain horizon3ai

CVE-2026-21589 is a critical vulnerability affecting multiple Atlassian Data Center products that allows unauthenticated attackers to read specific files within the web application root. NodeZero® Rapid Response safely validates exposure.

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