What is CVE-2020-4021?

CVE-2020-4021 is a medium-severity vulnerability in Atlassian Jira, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2020-06-01.

How severe is CVE-2020-4021?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Atlassian Jira

CVE-2020-4021

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.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.010 (59.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

Atlassian Jira
Atlassian Jira_data_center
Atlassian Jira_server
Atlassian Jira Server And Data Center — versions unspecified, 8.6.0
Atlassian Jira_software_data_center

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

security@atlassian.com (x_refsource_MISC, Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2020-4021?: CVE-2020-4021 is a medium-severity vulnerability in Atlassian Jira, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2020-06-01.
How severe is CVE-2020-4021?: Medium severity. CVSS v3 base score is 5.4 out of 10.