What’s Vulnerable › Vulnerabilities
CVE-2021-39123
- Severity: high (CVSS 7.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 1.6% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2021-09-14 · updated 2026-06-17
Description
Affected versions of Atlassian Jira Server and Data Center allow unauthenticated remote attackers to impact the application's availability via a Denial of Service (DoS) vulnerability in the /rest/gadget/1.0/createdVsResolved/generate endpoint. The affected versions are before version 8.16.0.
Affected products
- Atlassian Data Center: before 8.16.0 — fixed in 8.16.0
- Atlassian Jira: before 8.16.0 — fixed in 8.16.0
How to fix
Upgrade to a fixed version: Atlassian Data Center 8.16.0; Atlassian Jira 8.16.0. Check the vendor advisory for mitigations.
References
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