CISA KEV: CVE-2026-21589 — Atlassian Multiple Products actively exploited

Atlassian Multiple Products Files or Directories Accessible to External Parties Vulnerability. Multiple Atlassian products (Bitbucket Data Center ,Confluence Data Center, Jira Service Management Data Center, Jira Software Data Center, Bamboo Data Center, Crowd Data Center, Crucible and Fisheye) contain a files or directories accessible to external parties vulnerability which could allow an unauthenticated attacker to access specific files within the web application root directory in affected ver