Atlassian Crowd Data Center up to 7.1.2 xml external entity reference

CVSS Meta Temp Score
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CTI Interest Score
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5.9$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in Atlassian Crowd Data Center up to 7.1.2. The affected element is an unknown function. Executing a manipulation can lead to xml external entity reference. This vulnerability is tracked as CVE-2026-21569. The attack can be launched remotely. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in Atlassian Crowd Data Center up to 7.1.2. This vulnerability affects an unknown functionality. The manipulation with an unknown input leads to a xml external entity reference vulnerability. The CWE definition for the vulnerability is CWE-611. The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is available at confluence.atlassian.com. This vulnerability was named CVE-2026-21569 since 01/01/2026. The exploitation appears to be difficult. The attack can be initiated remotely. Additional levels of successful authentication are required for exploitation. The technical details are unknown and an exploit is not available.

Upgrading to version 7.1.3 eliminates this vulnerability.

The vulnerability is also documented in the databases at CNNVD (CNNVD-202601-4841) and CERT Bund (WID-SEC-2026-0177). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

  • Atlassian Jira
  • Dell Data Protection Advisor
  • Atlassian Bamboo
  • Atlassian Bitbucket
  • Atlassian Confluence

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.0
VulDB Meta Temp Score: 5.9

VulDB Base Score: 4.1
VulDB Temp Score: 3.9
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.9
CNA Vector (atlassian): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Xml external entity reference
CWE: CWE-611 / CWE-610
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Crowd Data Center 7.1.3

Timelineinfo

01/01/2026 CVE reserved
01/28/2026 +27 days Advisory disclosed
01/28/2026 +0 days VulDB entry created
03/18/2026 +49 days VulDB entry last update

Sourcesinfo

Vendor: atlassian.com

Advisory: confluence.atlassian.com
Status: Confirmed

CVE: CVE-2026-21569 (🔒)
GCVE (CVE): GCVE-0-2026-21569
GCVE (VulDB): GCVE-100-343162
CERT Bund: WID-SEC-2026-0177 - Atlassian Bamboo, Bitbucket, Confluence und Jira: Mehrere Schwachstellen
CNNVD: CNNVD-202601-4841 - Atlassian Crowd Data Center 安全漏洞

Entryinfo

Created: 01/28/2026 08:07
Updated: 03/18/2026 20:29
Changes: 01/28/2026 08:07 (63), 01/29/2026 15:27 (6), 03/18/2026 20:29 (7)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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