CVE-2021-43943

4.8 mediumEPSS 0.4%

Medium (4.8) in atlassian jira service management. EPSS 0.4% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

4.8 medium

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

EPSS: 0.4% chance of exploitation in the next 30 days; higher than 37% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2022-02-24
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

atlassian:jira_service_management

References

https://jira.atlassian.com/browse/JSDSERVER-10980
https://jira.atlassian.com/browse/JSDSERVER-10980

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