CVE-2026-21589
Atlassian Multiple Products Files or Directories Accessible to External Parties Vulnerability
Summary
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 versions.
Affected software
Vendor: Atlassian · Product: Multiple Products
Weakness types (CWE):
What to do
This vulnerability appears in CISA's Known Exploited Vulnerabilities catalog, meaning it is being exploited in the wild. Prioritize patching affected systems and verify exposure across your estate.
Related vulnerabilities in Atlassian
| CVE | Name | EPSS | Exploited |
|---|---|---|---|
| CVE-2023-22518 | Atlassian Confluence Data Center and Server Improper Authorization Vulnerability | 100.0% | Yes |
| CVE-2022-26134 | Atlassian Confluence Server and Data Center Remote Code Execution Vulnerability | 100.0% | Yes |
| CVE-2021-26086 | Atlassian Jira Server and Data Center Path Traversal Vulnerability | 100.0% | Yes |
| CVE-2021-26084 | Atlassian Confluence Server and Data Center Object-Graph Navigation Language (OG | 100.0% | Yes |
| CVE-2023-22527 | Atlassian Confluence Data Center and Server Template Injection Vulnerability | 100.0% | Yes |
| CVE-2021-26085 | Atlassian Confluence Server Pre-Authorization Arbitrary File Read Vulnerability | 99.9% | Yes |
| CVE-2019-3396 | Atlassian Confluence Server and Data Center Server-Side Template Injection Vulne | 99.9% | Yes |
| CVE-2023-22515 | Atlassian Confluence Data Center and Server Broken Access Control Vulnerability | 99.2% | Yes |
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