Cross-site scripting in Atlassian Jira Server and Data Center
Priority LOW 26CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.
Summary
Affected versions are: Before 8.5.5, and from 8.6.0 before 8.8.1 of Atlassian Jira Server and Data Center allow remote attackers to inject arbitrary HTML or JavaScript via a cross site scripting (XSS) vulnerability in the XML export view.
Why it matters now
EPSS 0.01003 63rd percentileScored 2026-11-07
Fix Fixed Jira Server and Data Center (Atlassian): 8.5.5, 8.8.1
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Atlassian | Jira Server and Data Center | before 8.5.5; 8.6.0 and later; before 8.8.1 | 8.5.5, 8.8.1 | Patch available | CNA |
- Jira Server and Data Center VendorAtlassian Affected before 8.5.5; 8.6.0 and later; before 8.8.1 Fixed in 8.5.5, 8.8.1 Patch available CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:atlassian:jira:*:*:*:*:*:*:*:* | before 7.13.16 | Vulnerable | Atlassian |
| cpe:2.3:a:atlassian:jira_data_center:*:*:*:*:*:*:*:* | 8.0.0 to before 8.5.5; 8.6.0 to before 8.8.1 | Vulnerable | Atlassian |
| cpe:2.3:a:atlassian:jira_server:*:*:*:*:*:*:*:* | 8.0.0 to before 8.5.5; 8.6.0 to before 8.8.1 | Vulnerable | Atlassian |
| cpe:2.3:a:atlassian:jira_software_data_center:*:*:*:*:*:*:*:* | before 7.13.16 | Vulnerable | Atlassian |
- cpe:2.3:a:atlassian:jira:*:*:*:*:*:*:*:* Versions before 7.13.16 Vulnerable ·Atlassian
- cpe:2.3:a:atlassian:jira_data_center:*:*:*:*:*:*:*:* Versions 8.0.0 to before 8.5.5; 8.6.0 to before 8.8.1 Vulnerable ·Atlassian
- cpe:2.3:a:atlassian:jira_server:*:*:*:*:*:*:*:* Versions 8.0.0 to before 8.5.5; 8.6.0 to before 8.8.1 Vulnerable ·Atlassian
- cpe:2.3:a:atlassian:jira_software_data_center:*:*:*:*:*:*:*:* Versions before 7.13.16 Vulnerable ·Atlassian
Remediation
- Fix · CNA Jira Server and Data Center (Atlassian) Fixed in 8.5.5, 8.8.1
Timeline
- 2026-10-02 Threatist record created from CVE-2020-4021
- 2026-10-03 Alias added: GHSA-844c-8r3w-mhj6
References
More Atlassian Jira vulnerabilities
- TI-2020-18587 Incorrect authorization in Atlassian Jira Server CVSS 3.1MEDIUM 5.3
- TI-2012-02540 Atlassian JIRA before 5.0.1; Confluence before 3.5.16, 4.0 before 4.0.7, and 4.1 before… CVSS 3.1CRITICAL 9.1
- TI-2020-11107 Information disclosure in Atlassian Jira Server CVSS 3.1MEDIUM 5.3
- TI-2019-06058 The CachingResourceDownloadRewriteRule class in Jira before version 7.13.4, and from… CVSS 3.1HIGH 7.5
- TI-2019-06065 Missing authentication in Atlassian Jira CVSS 3.1MEDIUM 5.3
- TI-2017-03897 The JIRA Workflow Designer Plugin in Atlassian JIRA Server before 6.3.0 improperly uses… CVSS 3.0CRITICAL 9.8
Sources
- CVE-2020-4021 · CVE Program
- CVE-2020-4021 · NVD
- FIRST EPSS
- GHSA-844c-8r3w-mhj6 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences