Atlassian Vulnerability Comes Under Attack Hours After Details Go Public

Threat actors are exploiting CVE-2026-21589, a critical Atlassian flaw that can expose sensitive files across multiple Data Center products. Threat actors have started exploiting CVE-2026-21589 (CVSS score of 9.3), a critical arbitrary file access flaw in Atlassian Data Center products. The vulnerability could allow attackers to access sensitive files under certain conditions. Affected products include […]