# Atlassian Data Center File Read CVE-2026-21589 (9.3)

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## Article Metadata
- Title: Atlassian Data Center File Read CVE-2026-21589 (9.3)
- Summary: CVE-2026-21589 is a CVSS 9.3 pre-auth file read in eight Atlassian Data Center products. Fixed versions, temporary mitigations and what to rotate.
- Published: Oct 7, 2026, 7:10 AM EDT
- Updated: Oct 7, 2026, 7:10 AM EDT
- Category: Exploits
- Primary topic: Cve 2026 21589
- Authors: Alex Kim
- Read time: 5 min
- Language: en_US
- Publication time zone: America/New_York (U.S. Eastern Time)
- Access: Free to read

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