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Vulnerability record · CVE-2021-39127 · published 21 October 2021

CVE-2021-39127: Atlassian jira vulnerability

Atlassian · Jira

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.

5.3 CVSS 3.1 Medium EPSS 1.3% · top 30.1%
5.3CVSS 3.1 base score, v2 5.0
1.3%EPSS exploitation probability, 30 days
NoNot in CISA KEV
4Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

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.

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

Affected products

4 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://jira.atlassian.com/browse/JRASERVER-72003 Issue TrackingPatchVendor Advisory
https://jira.atlassian.com/browse/JRASERVER-72003 Issue TrackingPatchVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2021-39127), CISA KEV, FIRST EPSS (scores of 2026-10-09). This page is refreshed as NVD updates the record.