CVE-2026-21569: XEE
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.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-21569?
CVE-2026-21569 has a high severity rating with a CVSS score of 7.9.
How do I fix CVE-2026-21569?
To resolve CVE-2026-21569, upgrade to Crowd Data Center and Server version 7.1.4 or later.
What type of vulnerability is CVE-2026-21569?
CVE-2026-21569 is an XML External Entity Injection (XXE) vulnerability.
Who is affected by CVE-2026-21569?
CVE-2026-21569 affects Atlassian Crowd Data Center and Server versions from 7.1.0 to 7.1.3.
What impact does CVE-2026-21569 have?
CVE-2026-21569 allows an authenticated attacker to access local and remote content.