CVE-2019-3403

Name: CVE-2019-3403
Creator: NVD / NIST
Published: 2019-05-22T18:29:00.833+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 52.64%

Last modified Jun 17, 2026

CVE-2019-3403 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. 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.. EPSS estimates a 52.64% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

5.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS Probability

52.64%

98.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Atlassian	Jira	< 7.13.3
Atlassian	Jira Server	>= 8.0.0, < 8.0.4
Atlassian	Jira Server	>= 8.1.0, < 8.1.1

References

https://jira.atlassian.com/browse/JRASERVER-69242Issue Tracking, Vendor Advisory
https://jira.atlassian.com/browse/JRASERVER-69242Issue Tracking, Vendor Advisory

Timeline

Published: May 22, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-3403?

How severe is CVE-2019-3403?

CVE-2019-3403 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 52.64% probability of exploitation in the next 30 days.

How do I fix CVE-2019-3403?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-3403?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST