CVE-2021-39127

5.3 mediumEPSS 1.3%

Medium (5.3) in atlassian. EPSS 1.3% chance of exploitation in the next 30 days.

Affected versions of Atlassian Jira Server and Data Center allow anonymous remote attackers to the query component JQL endpoint via a Broken Access Control vulnerability (BAC) vulnerability. The affected versions are before version 8.5.10, and from version 8.6.0 before 8.13.1.

Severity

CVSS 3.1

5.3 medium

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

EPSS: 1.3% chance of exploitation in the next 30 days; higher than 70% of CVEs (scores of 2026-10-31)
Published: 2021-10-21
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

atlassian:jira
atlassian:jira_data_center
atlassian:jira_server
atlassian:jira_software_data_center

References

https://jira.atlassian.com/browse/JRASERVER-72003
https://jira.atlassian.com/browse/JRASERVER-72003

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