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.

The version of Atlassian Confluence Server running on the remote host is affected by a vulnerability as referenced in the CONFSERVER-104488 advisory.

  - 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.
    (CVE-2026-21589)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The version of Atlassian Jira Server running on the remote host is affected by a vulnerability as referenced in the JRASERVER-79546 advisory.

  - 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.
    (CVE-2026-21589)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The version of Atlassian Jira Service Management Data Center and Server (Jira Service Desk) running on the remote host is affected by a vulnerability as referenced in the JSDSERVER-16809 advisory.

  - 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.
    (CVE-2026-21589)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Type	Severity
363027	Atlassian Confluence < 9.2.26 / 10.2.x < 10.2.19 (CONFSERVER-104488)	Nessus	CGI abuses	Combined	critical
363023	Atlassian Jira < 9.12.40 / 10.3.x < 10.3.26 / 11.3.x < 11.3.12 (JRASERVER-79546)	Nessus	CGI abuses	Combined	critical
363014	Atlassian Jira Service Management Data Center and Server < 5.12.40 / 10.3.x < 10.3.26 / 11.3.x < 11.3.12 (JSDSERVER-16809)	Nessus	Misc.	Local	critical

Detections

Analytics

CVE-2026-21589

critical

Tenable Plugins

critical

critical

critical