What is CVE-2021-43942?

CVE-2021-43942 is a medium-severity vulnerability in Atlassian Jira Data Center, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2022-01-04.

How severe is CVE-2021-43942?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Atlassian Jira Data Center

CVE-2021-43942

Affected versions of Atlassian Jira Server and Data Center allow remote attackers to inject arbitrary HTML or JavaScript via a Reflected Cross-Site Scripting (XSS) vulnerability in the /rest/collectors/1.0/template/custom endpoint. To expl…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.554 (98.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Atlassian Jira Data Center — versions unspecified, 8.14.0
Atlassian Jira Server — versions unspecified, 8.14.0
Atlassian Jira_server
Atlassian Jira_server_and_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-2021-43942?: CVE-2021-43942 is a medium-severity vulnerability in Atlassian Jira Data Center, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2022-01-04.
How severe is CVE-2021-43942?: Medium severity. CVSS v3 base score is 6.1 out of 10.