What’s Vulnerable › Vulnerabilities
CVE-2021-39117
- Severity: medium (CVSS 4.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.6% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2021-08-30 · updated 2026-06-17
- Weakness: CWE-79
Description
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.
Affected products
- Atlassian Data Center: before 8.18.0 — fixed in 8.18.0
- Atlassian Jira: before 8.18.0 — fixed in 8.18.0
How to fix
Upgrade to a fixed version: Atlassian Data Center 8.18.0; Atlassian Jira 8.18.0. Check the vendor advisory for mitigations.
References
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