CVE-2026-21589
Analyzed
Analyzed - Analysis Complete
BaseFortify
Vulnerability report for CVE-2026-21589, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-10-05
Last updated on: 2026-10-19
Assigner: Atlassian
Description
Description
This is a vulnerability in Bitbucket Data Center, Confluence Data Center, Jira Service Management Data Center, Jira Software Data Center, Bamboo Data Center. Crowd Data Center, Crucible and Fisheye. This Arbitrary File Access vulnerability allows an unauthenticated attacker to access specific files within the web application root directory in affected versions. Exploitation requires prior knowledge of the target file's exact name and path; this vulnerability does not allow attackers to enumerate or list directory contents. In some configurations, there may be some sensitive files that make this highly severe. This vulnerability allows an unauthenticated remote attacker to access specific files within the web application root directory in affected versions. The vulnerability must be addressed for affected versions of: -- Bitbucket Data Center, introduced in version >= 4.6.0, fix versions: 9.4.26, 10.2.8, 10.5.1 -- Confluence Data Center, introduced in version >= 5.10.0, fix versions 9.2.26, 10.2.19 -- Crowd Data Center, introduced in version >= 2.11.0, fix versions 6.3.7, 7.0.3, 7.1.7, 7.2.4 -- Jira Software Data Center, introduced in version >= 7.1.0, fix versions 9.12.40, 10.3.26, 11.3.12 -- Jira Service Management Data Center, introduced in version >= 3.1.0, fix versions 5.12.40, 10.3.26, 11.3.12 -- Bamboo Data Center >= 7.0.1, fix versions 10.2.24, 12.1.12 -- Crucible, fix versions 4.9.15 -- Fisheye, fix version 4.9.15 -- Exploitation requires prior knowledge of the target file's exact name and path. The vulnerability does not include the capability to enumerate or list directory contents.
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| atlassian | bitbucket_data_center | From 10.3.0 (inc) to 10.5.1 (exc) |
| atlassian | bitbucket_data_center | From 9.5.0 (inc) to 10.2.8 (exc) |
| atlassian | bitbucket_server | From 4.6.0 (inc) to 8.14.6 (inc) |
| atlassian | bitbucket_data_center | From 7.17.0 (inc) to 9.4.26 (exc) |
| atlassian | confluence_data_center | From 5.10.0 (inc) to 9.2.26 (exc) |
| atlassian | confluence_data_center | From 9.3.0 (inc) to 10.2.19 (exc) |
| atlassian | crowd | From 2.11.0 (inc) to 6.3.7 (exc) |
| atlassian | crowd | From 7.0.0 (inc) to 7.0.3 (exc) |
| atlassian | crowd | From 7.1.0 (inc) to 7.1.7 (exc) |
| atlassian | crowd | From 7.2.0 (inc) to 7.2.4 (exc) |
| atlassian | jira_data_center | From 7.1.0 (inc) to 9.12.40 (exc) |
| atlassian | jira_data_center | From 10.4.0 (inc) to 11.3.12 (exc) |
| atlassian | jira_data_center | From 9.13.0 (inc) to 10.3.26 (exc) |
| atlassian | jira_service_management | From 10.4.0 (inc) to 11.3.12 (exc) |
| atlassian | jira_service_management | From 5.13.0 (inc) to 10.3.26 (exc) |
| atlassian | jira_service_desk | From 3.1.0 (inc) to 4.13.27 (inc) |
| atlassian | jira_service_management | From 4.14.0 (inc) to 5.12.40 (exc) |
| atlassian | bamboo | From 7.0.1 (inc) to 10.2.24 (exc) |
| atlassian | bamboo | From 11.0.0 (inc) to 12.1.12 (exc) |
| atlassian | crucible | to 4.9.15 (exc) |
| atlassian | fisheye | to 4.9.15 (exc) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-552 | The product makes files or directories accessible to unauthorized actors, even though they should not be. |
