CVE-2026-21569 (GCVE-0-2026-21569)

Vulnerability from cvelistv5 – Published: 2026-01-28 00:30 – Updated: 2026-01-28 14:49
VLAI?
Summary
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.
Severity ?
7.9 (High)
CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:L/A:H
CWE
  • XXE (XML External Entity Injection)
Assigner
References
Impacted products
Vendor Product Version
Atlassian Crowd Data Center Affected: 7.1.0 to 7.1.2
Unaffected: 7.1.3
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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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