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Fencer Vulns
medium 5.3

CVE-2019-3403 json

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 be…

published 2019-05-22 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-13042

cvss
5.3
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
53.6%
EPSS 53.6% chance of exploitation in 30 days, percentile 99%
public exploits
0
none known, plus a Nuclei check

Summary

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.

Patch / fix

  • Atlassian Jira 7.13.3, 8.0.4, 8.1.1

Exploit prediction

53.59% chance of exploitation in the next 30 days, higher than 99% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

CVSS scores

assigned by version score vector
NVD 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N

Affected products

  • Atlassian Jira

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.