CVE-2026-21569
This High severity XXE (XML External Entity Injection) vulnerability was introduced in version 7...
7.9 High
This High severity XXE (XML External Entity Injection) vulnerability was introduced in version 7.1.0 of Crowd Data Center and Server.
This XXE (XML External Entity Injection) vulnerability, with a CVSS Score of 7.9, allows an authenticated attacker to access local and remote content which has high impact to confidentiality, low impact to integrity, high impact to availability, and requires no user interaction.
Atlassian recommends that Crowd Data Center and Server customers upgrade to latest version, if you are unable to do so, upgrade your instance to one of the specified supported fixed versions:
* Crowd Data Center and Server 7.1: Upgrade to a release greater than or equal to 7.1.3
See the release notes (https://confluence.atlassian.com/crowd/crowd-release-notes-199094.html). You can download the latest version of Crowd Data Center and Server from the download center (https://www.atlassian.com/software/crowd/download-archive).
This vulnerability was reported via our Atlassian (Internal) program.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- High
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- Low
- Availability
- High
Exploit likelihood
0.33%Up 0.3 points since Jan 28, 2026
What each source reports
CVE List Score used
This High severity XXE (XML External Entity Injection) vulnerability was introduced in version 7.1.0 of Crowd Data Center and Server.
This XXE (XML External Entity Injection) vulnerability, with a CVSS Score of 7.9, allows an authenticated attacker to access local and remote content which has high impact to confidentiality, low impact to integrity, high impact to availability, and requires no user interaction.
Atlassian recommends that Crowd Data Center and Server customers upgrade to latest version, if you are unable to do so, upgrade your instance to one of the specified supported fixed versions:
* Crowd Data Center and Server 7.1: Upgrade to a release greater than or equal to 7.1.3
See the release notes (https://confluence.atlassian.com/crowd/crowd-release-notes-199094.html). You can download the latest version of Crowd Data Center and Server from the download center (https://www.atlassian.com/software/crowd/download-archive).
This vulnerability was reported via our Atlassian (Internal) program.
- Record
CVE-2026-21569- CVSS 3.0
- 7.9 High
CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:L/A:H - Weakness
- CWE-611
- Updated
- 2026-11-02
EUVDEUVD-2026-4913
This High severity XXE (XML External Entity Injection) vulnerability was introduced in version 7.1.0 of Crowd Data Center and Server.
This XXE (XML External Entity Injection) vulnerability, with a CVSS Score of 7.9, allows an authenticated attacker to access local and remote content which has high impact to confidentiality, low impact to integrity, high impact to availability, and requires no user interaction.
Atlassian recommends that Crowd Data Center and Server customers upgrade to latest version, if you are unable to do so, upgrade your instance to one of the specified supported fixed versions:
* Crowd Data Center and Server 7.1: Upgrade to a release greater than or equal to 7.1.3
See the release notes (https://confluence.atlassian.com/crowd/crowd-release-notes-199094.html). You can download the latest version of Crowd Data Center and Server from the download center (https://www.atlassian.com/software/crowd/download-archive).
This vulnerability was reported via our Atlassian (Internal) program.
- Record
EUVD-2026-4913- CVSS 3.0
- 7.9 High
CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:L/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-5x73-r429-p343
This High severity XXE (XML External Entity Injection) vulnerability was introduced in version 7...
This High severity XXE (XML External Entity Injection) vulnerability was introduced in version 7.1.0 of Crowd Data Center and Server.
This XXE (XML External Entity Injection) vulnerability, with a CVSS Score of 7.9, allows an authenticated attacker to access local and remote content which has high impact to confidentiality, low impact to integrity, high impact to availability, and requires no user interaction.
Atlassian recommends that Crowd Data Center and Server customers upgrade to latest version, if you are unable to do so, upgrade your instance to one of the specified supported fixed versions:
* Crowd Data Center and Server 7.1: Upgrade to a release greater than or equal to 7.1.3
See the release notes (https://confluence.atlassian.com/crowd/crowd-release-notes-199094.html). You can download the latest version of Crowd Data Center and Server from the download center (https://www.atlassian.com/software/crowd/download-archive).
This vulnerability was reported via our Atlassian (Internal) program.
- Record
GHSA-5x73-r429-p343- CVSS 3.0
- 7.9 High
CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:L/A:H - Weakness
- CWE-611
- Updated
- 2026-11-02
NVD
This High severity XXE (XML External Entity Injection) vulnerability was introduced in version 7.1.0 of Crowd Data Center and Server.
This XXE (XML External Entity Injection) vulnerability, with a CVSS Score of 7.9, allows an authenticated attacker to access local and remote content which has high impact to confidentiality, low impact to integrity, high impact to availability, and requires no user interaction.
Atlassian recommends that Crowd Data Center and Server customers upgrade to latest version, if you are unable to do so, upgrade your instance to one of the specified supported fixed versions:
* Crowd Data Center and Server 7.1: Upgrade to a release greater than or equal to 7.1.3
See the release notes (https://confluence.atlassian.com/crowd/crowd-release-notes-199094.html). You can download the latest version of Crowd Data Center and Server from the download center (https://www.atlassian.com/software/crowd/download-archive).
This vulnerability was reported via our Atlassian (Internal) program.
- Record
CVE-2026-21569- CVSS 3.0
- 7.9 High
CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:L/A:H - Weakness
- CWE-611
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-21569 is a high vulnerability (CVSS 7.9) in Atlassian Crowd, published January 28, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.33%, the 26th percentile. No source names a fixed version.