The Gadget API in Atlassian Jira Server and Data Center in affected versions allows…
Priority LOW 28Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Low
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
The Gadget API in Atlassian Jira Server and Data Center in affected versions allows remote attackers to make Jira unresponsive via repeated requests to a certain endpoint in the Gadget API. The affected versions are before version 8.5.4, and from version 8.6.0 before 8.6.1.
Why it matters now
EPSS 0.02139 82nd percentileScored 2026-11-07
Fix Fixed Jira Server (Atlassian): 8.5.4, 8.6.1
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Atlassian | Jira Server | before 8.5.4; 8.6.0 and later; before 8.6.1 | 8.5.4, 8.6.1 | Patch available | CNA |
- Jira Server VendorAtlassian Affected before 8.5.4; 8.6.0 and later; before 8.6.1 Fixed in 8.5.4, 8.6.1 Patch available CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:atlassian:jira:*:*:*:*:*:*:*:* | before 8.5.4 | Vulnerable | Atlassian |
| cpe:2.3:a:atlassian:jira_data_center:*:*:*:*:*:*:*:* | 8.5.5 to before 8.6.1; 8.6.2 to before 8.7.0 | Vulnerable | Atlassian |
| cpe:2.3:a:atlassian:jira_server:*:*:*:*:*:*:*:* | 8.5.5 to before 8.6.1; 8.6.2 to before 8.7.0 | Vulnerable | Atlassian |
| cpe:2.3:a:atlassian:jira_software_data_center:*:*:*:*:*:*:*:* | before 8.5.4 | Vulnerable | Atlassian |
- cpe:2.3:a:atlassian:jira:*:*:*:*:*:*:*:* Versions before 8.5.4 Vulnerable ·Atlassian
- cpe:2.3:a:atlassian:jira_data_center:*:*:*:*:*:*:*:* Versions 8.5.5 to before 8.6.1; 8.6.2 to before 8.7.0 Vulnerable ·Atlassian
- cpe:2.3:a:atlassian:jira_server:*:*:*:*:*:*:*:* Versions 8.5.5 to before 8.6.1; 8.6.2 to before 8.7.0 Vulnerable ·Atlassian
- cpe:2.3:a:atlassian:jira_software_data_center:*:*:*:*:*:*:*:* Versions before 8.5.4 Vulnerable ·Atlassian
Remediation
- Fix · CNA Jira Server (Atlassian) Fixed in 8.5.4, 8.6.1
Timeline
- 2026-10-02 Threatist record created from CVE-2019-20899
- 2026-10-03 Alias added: GHSA-6p5p-qf85-v9pw
References
More Atlassian Jira vulnerabilities
- TI-2020-18587 Incorrect authorization in Atlassian Jira Server CVSS 3.1MEDIUM 5.3
- TI-2012-02540 Atlassian JIRA before 5.0.1; Confluence before 3.5.16, 4.0 before 4.0.7, and 4.1 before… CVSS 3.1CRITICAL 9.1
- TI-2020-11107 Information disclosure in Atlassian Jira Server CVSS 3.1MEDIUM 5.3
- TI-2019-06058 The CachingResourceDownloadRewriteRule class in Jira before version 7.13.4, and from… CVSS 3.1HIGH 7.5
- TI-2019-06065 Missing authentication in Atlassian Jira CVSS 3.1MEDIUM 5.3
- TI-2017-03897 The JIRA Workflow Designer Plugin in Atlassian JIRA Server before 6.3.0 improperly uses… CVSS 3.0CRITICAL 9.8
Sources
- CVE-2019-20899 · CVE Program
- CVE-2019-20899 · NVD
- FIRST EPSS
- GHSA-6p5p-qf85-v9pw · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences