All vulnerabilities

Servers and applications

CVE-2019-8449

The /rest/api/latest/groupuserpicker resource in Jira before version 8.4.0 allows remote attackers to enumerate usernames via an information disclosure vulnerability.

Severity
Medium 5.3
Published
11 Sept 2019
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
8.4.0
Exploit chance
86% in the next 30 daysHigher than 99% of CVEs. EPSS by FIRST, 10 Nov 2026
Weakness
Missing authentication (CWE-306)
Attack
Over the network · No login needed · No user action needed
Attacker can
Read some data
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Sources
NVD

Affected software

SoftwareAffected versions
JiraServers and applications · cpe:a:atlassian:jira
  • Every version before 8.4.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2019-8449
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2019-8449