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Medium4.8Atlassian

Medium [CVE-2021-43943] Affected versions of Atlassian Jira Service Management Server and Data Center

This medium-severity Atlassian advisory covers CVE-2021-43943 affecting Jira Service Management.

CVE-2021-43943 Published Feb 24, 2022Updated by vendor Jun 17, 2026
Affected products & platforms
AtlassianJira
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Summary

Affected versions of Atlassian Jira Service Management Server and Data Center allow attackers with administrator privileges to inject arbitrary HTML or JavaScript via a Cross-Site Scripting (XSS) vulnerability in the "Object Schema" field of /secure/admin/InsightDefaultCustomFieldConfig.jspa. The affected versions are before version 4.21.0.

Affected versions
  • 4.21.0

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Fixed versions
  • 4.21.0

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Mitigation

Upgrade to a fixed release: 4.21.0. That is the remediation for this advisory.

The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

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