CVE-2021-39117

4.8 mediumEPSS 0.6%

Medium (4.8) in atlassian. EPSS 0.6% chance of exploitation in the next 30 days.

The AssociateFieldToScreens page in Atlassian Jira Server and Data Center before version 8.18.0 allows remote attackers to inject arbitrary HTML or JavaScript via a Cross-Site Scripting (XSS) vulnerability via the name of a custom field.

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: 0.6% chance of exploitation in the next 30 days; higher than 50% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2021-08-30
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

atlassian:data_center
atlassian:jira

References

https://jira.atlassian.com/browse/JRASERVER-72597
https://jira.atlassian.com/browse/JRASERVER-72597

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