CVEs / CVE-2019-3403
CVE-2019-3403: Atlassian Jira vulnerability
- medium 5.3 CVSS 3.1 (NVD)
- EPSS 53.5% chance of exploitation in the next 30 days, higher than 98% of CVEs (4 Nov 2026)
- Last changed at its sources
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Description
The /rest/api/2/user/picker rest resource in Jira before version 7.13.3, from version 8.0.0 before version 8.0.4, and from version 8.1.0 before version 8.1.1 allows remote attackers to enumerate usernames via an incorrect authorisation check.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| Atlassian Jira | from unspecified, before 7.13.3 | 7.13.3 |
| Atlassian Jira | from 8.0.0, before unspecified | unspecified |
| Atlassian Jira | from unspecified, before 8.0.4 | 8.0.4 |
| Atlassian Jira | from 8.1.0, before unspecified | unspecified |
| Atlassian Jira | from unspecified, before 8.1.1 | 8.1.1 |
Exploitation
Not in the CISA Known Exploited Vulnerabilities catalog as of 4 Nov 2026.
Severity
| CVSS 3.1 | 5.3 mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:NScored by NVD |
|---|---|
| Weakness | CWE-863 |
References
- CVE-2019-3403 on NVD
- https://jira.atlassian.com/browse/JRASERVER-69242 Issue Tracking, Vendor Advisory
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.