CVE-2019-8449
The /rest/api/latest/groupuserpicker resource in Jira before version 8.4.0 allows remote...
The /rest/api/latest/groupuserpicker resource in Jira before version 8.4.0 allows remote attackers to enumerate usernames via an information disclosure vulnerability.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
The /rest/api/latest/groupuserpicker resource in Jira before version 8.4.0 allows remote attackers to enumerate usernames via an information disclosure vulnerability.
- Record
CVE-2019-8449- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:P/I:N/A:N - Weakness
- CWE-306
- Updated
- 2026-11-02
CVE List No score
The /rest/api/latest/groupuserpicker resource in Jira before version 8.4.0 allows remote attackers to enumerate usernames via an information disclosure vulnerability.
- Record
CVE-2019-8449- Updated
- 2026-11-02
EUVDEUVD-2019-17839 No score
The /rest/api/latest/groupuserpicker resource in Jira before version 8.4.0 allows remote attackers to enumerate usernames via an information disclosure vulnerability.
- Record
EUVD-2019-17839- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-8wr9-r69x-g268 No score
The /rest/api/latest/groupuserpicker resource in Jira before version 8.4.0 allows remote...
The /rest/api/latest/groupuserpicker resource in Jira before version 8.4.0 allows remote attackers to enumerate usernames via an information disclosure vulnerability.
- Record
GHSA-8wr9-r69x-g268- Weakness
- CWE-200, CWE-306
- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | mufeedvh/CVE-2019-8449 | 2020-02-02 |
| Exploit-DB | Jira 8.3.4 - Information Disclosure (Username Enumeration) | 2020-02-03 |
| PoC in GitHub | r0lh/CVE-2019-8449 | 2020-02-14 |
| Nuclei | Jira <8.4.0 - Information Disclosure |
History
| Recorded | Changed | Sources |
|---|---|---|
| exploits, facts | ||
| aliases, published | EUVD | |
| first indexed | CVE List, Exploit-DB, GitHub Advisories, Nuclei, NVD, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2019-8449 is a medium vulnerability (CVSS 5.3) in Atlassian Jira, published September 11, 2019. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 85.7%, the 99th percentile. No source names a fixed version.