CVE-2021-39126

6.5 mediumEPSS 0.7%

Medium (6.5) in atlassian. EPSS 0.7% chance of exploitation in the next 30 days.

Affected versions of Atlassian Jira Server and Data Center allow remote attackers to modify various resources via a Cross-Site Request Forgery (CSRF) vulnerability, following an Information Disclosure vulnerability in the referrer headers which discloses a user's CSRF token. The affected versions are before version 8.5.10, and from version 8.6.0 before 8.13.1.

Severity

CVSS 3.1

6.5 medium

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

EPSS: 0.7% chance of exploitation in the next 30 days; higher than 54% of CVEs (scores of 2026-10-31)
CWE: CWE-352
Published: 2021-10-21
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

atlassian:jira_data_center
atlassian:jira_server

References

https://jira.atlassian.com/browse/JRASERVER-71806
https://jira.atlassian.com/browse/JRASERVER-71806

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