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.
This High severity DoS (Denial of Service) vulnerability was introduced in versions 8.9.0, 9.0.1, 9.1.0, 9.2.0, 9.3.1, 9.4.0, 9.5.1, 10.0.2, 10.1.0, and 10.2.0 of Confluence Data Center.
This DoS (Denial of Service) vulnerability, with a CVSS Score of 7.1, allows an authenticated attacker to cause a resource to be unavailable for its intended users by temporarily or indefinitely disrupting services of a host connected to a network.
Atlassian recommends that Confluence Data Center customers upgrade to latest version, if you are unable to do so, upgrade your instance to one of the specified supported fixed versions:
Confluence Data Center 9.2: Upgrade to a release greater than or equal to 9.2.24
Confluence Data Center 10.2: Upgrade to a release greater than or equal to 10.2.17
See the release notes ([https://confluence.atlassian.com/doc/confluence-release-notes-327.html]). You can download the latest version of Confluence Data Center from the download center ([https://www.atlassian.com/software/confluence/download-archives]).
This vulnerability was reported via our Penetration Testing program.
This High severity Improper Authorization vulnerability was introduced in version 11.3.0 of Jira Service Management Data Center.
This Improper Authorization vulnerability, with a CVSS Score of 7.1, allows an authenticated attacker to gain unintended access and can lead to the exposure of resources or functionality, possibly providing attackers with sensitive information or even execute arbitrary code.
Atlassian recommends that Jira Service Management Data Center customers upgrade to latest version, if you are unable to do so, upgrade your instance to one of the specified supported fixed versions:
* Jira Service Management Data Center 11.3: Upgrade to a release greater than or equal to 11.3.11
See the release notes (https://confluence.atlassian.com/servicemanagement/jira-service-management-release-notes-780083086.html). You can download the latest version of Jira Service Management Data Center from the download center (https://www.atlassian.com/software/jira/service-management/download-archives).
This vulnerability was reported via our Penetration Testing program.
This High severity Improper Authorization vulnerability was introduced in versions 7.4.0, 7.13.0, 8.5.0, 8.9.0, 9.0.1, 9.1.0, 9.2.0, 9.3.1, 9.4.0, 9.5.1, 10.0.2, 10.1.0, and 10.2.0 of Confluence Data Center.
This Improper Authorization vulnerability, with a CVSS Score of 7.1, allows an authenticated attacker to gain unintended access and can lead to the exposure of resources or functionality, possibly providing attackers with sensitive information or even execute arbitrary code.
Atlassian recommends that Confluence Data Center customers upgrade to latest version, if you are unable to do so, upgrade your instance to one of the specified supported fixed versions:
Confluence Data Center 9.2: Upgrade to a release greater than or equal to 9.2.24
Confluence Data Center 10.2: Upgrade to a release greater than or equal to 10.2.17
See the release notes ([https://confluence.atlassian.com/doc/confluence-release-notes-327.html]). You can download the latest version of Confluence Data Center from the download center ([https://www.atlassian.com/software/confluence/download-archives]).
This vulnerability was reported via our Penetration Testing program.
CVE-2026-21584 is a high severity improper authorization vulnerability in Atlassian Bamboo Data Center versions 10.0.0, 10.1.0, 10.2.0, 11.0.0, 12.0.0, and 12.1.0. It allows an authenticated attacker with low privileges to gain unintended access to resources or functionality, potentially exposing sensitive information or enabling arbitrary code execution. Atlassian recommends upgrading to fixed versions 10.2.22 or later for the 10.2.x branch and 12.1.10 or later for the 12.1.x branch. This vulnerability was discovered through Atlassian's penetration testing program.
CVE-2026-21582 is a high severity Broken Authentication and Session Management (BASM) vulnerability in Atlassian Crowd Data Center version 7.2.1. It allows an unauthenticated attacker to perform actions as another user. Atlassian recommends upgrading to version 7.2.2 or later to remediate this issue.
CVE-2026-21580 is a high-severity vulnerability in Atlassian Confluence Data Center and Server that allows unauthenticated attackers to execute stored cross-site scripting (XSS) attacks, escalate privileges, and exploit security misconfigurations. It affects multiple versions starting from 7.1.1 through various releases up to 10.2.0. The vulnerability enables execution of arbitrary HTML or JavaScript in victims' browsers and unauthorized actions as higher-privileged users. Atlassian recommends upgrading to fixed versions 9.2.21 or later for the 9.2 branch and 10.2.13 or later for the 10.2 branch.
This High severity RCE (Remote Code Execution) vulnerability was introduced in version 3.4.11 of Sourcetree for Mac and Sourcetree for Windows.
This RCE (Remote Code Execution) vulnerability, with a CVSS Score of 7.1, allows an authenticated attacker to execute arbitrary code which has high impact to confidentiality, high impact to integrity, high impact to availability, and requires user interaction.
Atlassian recommends that Sourcetree for Mac and Sourcetree for Windows customers upgrade to latest version, if you are unable to do so, upgrade your instance to one of the specified supported fixed versions:
* Sourcetree for Mac and Sourcetree for Windows 3.4: Upgrade to a release greater than or equal to 3.4.13
See the release notes (https://www.sourcetreeapp.com/download-archives). You can download the latest version of Sourcetree for Mac and Sourcetree for Windows from the download center (https://www.sourcetreeapp.com/download-archives).
This vulnerability was reported via our Bug Bounty program.
CVE-2026-21577 is a high severity Denial of Service (DoS) vulnerability affecting multiple versions of Atlassian Confluence Data Center. It allows an authenticated attacker to disrupt service availability by causing resource unavailability on the host. The vulnerability impacts specific versions from 9.0.1 through 10.2.0. Atlassian recommends upgrading to fixed versions 9.2.17 or later for the 9.2.x line, and 10.2.7 or later for the 10.2.x line to mitigate this issue.
CVE-2026-21579 is a high severity information disclosure vulnerability affecting Atlassian Confluence Data Center. It impacts multiple specific versions starting from 7.17.0 through 10.2.0. The vulnerability allows an unauthenticated attacker to view sensitive information. Atlassian recommends upgrading to fixed versions 9.2.22 or later for the 9.2 branch and 10.2.14 or later for the 10.2 branch to remediate this issue.
This Critical severity OS Command Injection vulnerability was introduced in versions 9.6.0, 10.0.0, 10.1.0, 10.2.0,
11.0.0, 11.1.0, 12.0.0, and 12.1.0 of Bamboo Data Center.
This RCE (Remote Code Execution) vulnerability, with a CVSS Score of 9.4 and a CVSS Vector of
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H allows an authenticated attacker to execute commands
on the remote system, which has high impact to confidentiality, high impact to integrity, high impact to availability,
and requires no user interaction.
Atlassian recommends that Bamboo Data Center customers upgrade to latest version, if you are unable to do so, upgrade
your instance to one of the specified supported fixed versions:
Bamboo Data Center 9.6.0: Upgrade to a release greater than or equal to 9.6.25
Bamboo Data Center 10.2: Upgrade to a release greater than or equal to 10.2.18
Bamboo Data Center 12.1: Upgrade to a release greater than or equal to 12.1.6
See the release notes ([https://confluence.atlassian.com/bambooreleases/bamboo-release-notes-1189793869.html]). You can download the latest version of Bamboo Data Center from the download center ([https://www.atlassian.com/software/bamboo/download-archives]).
This High severity RCE (Remote Code Execution) vulnerability was introduced in versions 9.6.0, 10.0.0, 10.1.0, 10.2.0, 11.0.0, 11.1.0, 12.0.0, and 12.1.0 of Bamboo Data Center.
This RCE (Remote Code Execution) vulnerability, with a CVSS Score of 8.6, allows an authenticated attacker to execute malicious code on the remote system.
Atlassian recommends that Bamboo Data Center customers upgrade to latest version, if you are unable to do so, upgrade your instance to one of the specified supported fixed versions:
Bamboo Data Center 9.6: Upgrade to a release greater than or equal to 9.6.24
Bamboo Data Center 10.2: Upgrade to a release greater than or equal to 10.2.16
Bamboo Data Center 12.1: Upgrade to a release greater than or equal to 12.1.3
See the release notes ([https://confluence.atlassian.com/bambooreleases/bamboo-release-notes-1189793869.html]). You can download the latest version of Bamboo Data Center from the download center ([https://www.atlassian.com/software/bamboo/download-archives]).
This vulnerability was reported via our Atlassian (Internal) program.
CVE-2026-21569 is a high severity XML External Entity (XXE) injection vulnerability affecting Atlassian Crowd Data Center and Server versions 7.1.0 through 7.1.2. It allows an authenticated attacker to exploit the XML parser to access local and remote content, impacting confidentiality and availability significantly, with limited impact on integrity. The vulnerability requires high privileges but no user interaction and has a CVSS score of 7.9. Atlassian has released fixed versions starting from 7.1.
Jira Align is vulnerable to an authorization issue. A low-privilege user can access unexpected endpoints that disclose a small amount of sensitive information. For example, a low-level user was able to view items on the "Why" page.
Jira Align is vulnerable to an authorization issue. A low-privilege user can access unexpected endpoints that disclose a small amount of sensitive information. For example, a low-level user was able to subscribe to an item/object without having the expected permission level.
Jira Align is vulnerable to an authorization issue. A low-privilege user can access unexpected endpoints that disclose a small amount of sensitive information. For example, a low-level user was able to view certain sprint data without the required permission.
Jira Align is vulnerable to an authorization issue. A low-privilege user without sufficient privileges to perform an action could if they included a particular state-related parameter of a user with sufficient privileges to perform the action.
Jira Align is vulnerable to an authorization issue. A low-privilege user can access unexpected endpoints that disclose a small amount of sensitive information. For example, a low-level user was able to view portfolio rooms without the required permission.
Jira Align is vulnerable to an authorization issue. A low-privilege user can access unexpected endpoints that disclose a small amount of sensitive information. For example, a low-level user was able to read external reports without the required permission.
Jira Align is vulnerable to an authorization issue. A low-privilege user can access unexpected endpoints that disclose a small amount of sensitive information. For example, a low-level user was able to view audit log items.
