What’s Vulnerable › Vulnerabilities
CVE-2019-3403
- Severity: medium (CVSS 5.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 51.3% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2019-05-22 · updated 2026-06-17
- Weakness: CWE-863
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 products
- Atlassian Jira: before 7.13.3 — fixed in 7.13.3
- Atlassian Jira: from 8.0.0 before 8.0.4; from 8.1.0 before 8.1.1 — fixed in 8.0.4, 8.1.1
How to fix
Upgrade to a fixed version: Atlassian Jira 7.13.3; Atlassian Jira 8.0.4, 8.1.1. Check the vendor advisory for mitigations.
References
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