CVE-2026-21589: Path Traversal
h3. Summary
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.
h3. Context
This vulnerability allows an unauthenticated remote attacker to access specific files within the web application root directory in affected versions.
h3. Details:
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, 7.1.1, 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.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Bamboo Data Centerto a version that resolves this vulnerability.Fixed in 10.2.24 - Upgrade
Upgrade
Bamboo Data Centerto a version that resolves this vulnerability.Fixed in 12.1.12 - Upgrade
Upgrade
Bitbucket Data Centerto a version that resolves this vulnerability.Fixed in 9.4.26 - Upgrade
Upgrade
Bitbucket Data Centerto a version that resolves this vulnerability.Fixed in 10.2.8 - Upgrade
Upgrade
Bitbucket Data Centerto a version that resolves this vulnerability.Fixed in 10.5.1 - Upgrade
Upgrade
Confluence Data Centerto a version that resolves this vulnerability.Fixed in 9.2.26 - Upgrade
Upgrade
Confluence Data Centerto a version that resolves this vulnerability.Fixed in 10.2.19 - Upgrade
Upgrade
Crowd Data Centerto a version that resolves this vulnerability.Fixed in 6.3.7 - Upgrade
Upgrade
Crowd Data Centerto a version that resolves this vulnerability.Fixed in 7.0.3 - Upgrade
Upgrade
Crowd Data Centerto a version that resolves this vulnerability.Fixed in 7.1.1 - Upgrade
Upgrade
Crowd Data Centerto a version that resolves this vulnerability.Fixed in 7.2.4 - Upgrade
Upgrade
Crucibleto a version that resolves this vulnerability.Fixed in 4.9.15 - Upgrade
Upgrade
Fisheyeto a version that resolves this vulnerability.Fixed in 4.9.15 - Upgrade
Upgrade
Jira Service Management Data Centerto a version that resolves this vulnerability.Fixed in 5.12.40 - Upgrade
Upgrade
Jira Service Management Data Centerto a version that resolves this vulnerability.Fixed in 10.3.26 - Upgrade
Upgrade
Jira Service Management Data Centerto a version that resolves this vulnerability.Fixed in 11.3.12 - Upgrade
Upgrade
Jira Software Data Centerto a version that resolves this vulnerability.Fixed in 9.12.40 - Upgrade
Upgrade
Jira Software Data Centerto a version that resolves this vulnerability.Fixed in 10.3.26 - Upgrade
Upgrade
Jira Software Data Centerto a version that resolves this vulnerability.Fixed in 11.3.12
Event History
Frequently Asked Questions
Which documented releases should be used to remediate affected Bitbucket, Confluence, and Crowd deployments?
Bitbucket Data Center is fixed in 9.4.26, 10.2.8, and 10.5.1. Confluence Data Center is fixed in 9.2.26 and 10.2.19. Crowd Data Center is fixed in 6.3.7, 7.0.3, 7.1.1, and 7.2.4.
How far back does the documented exposure extend for these products?
The issue was introduced in Bitbucket Data Center 4.6.0 or later, Confluence Data Center 5.10.0 or later, Crowd Data Center 2.11.0 or later, and Jira Software Data Center 7.1.0 or later. The supplied information does not provide the corresponding introduction versions for the other listed products.