ZDF
Sign inSign up

Vulnerabilities

Vulnerability · 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.

Published Sep 11, 2019 · catalog updated Jun 17, 2026 · The /rest/api/latest/groupuserpicker resource in

Last checked Nov 6, 2026. A connected source was read within the last 7 days.

Check this week

CVE-2019-8449 is not in CISA KEV. FIRST estimates a 85.74% chance of exploitation in the next 30 days. Check whether you run The /rest/api/latest/groupuserpicker resource in.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (The /rest/api/latest/groupuserpicker resource in).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Medium5.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
85.74%
Remediation
Version ranges on file
Affected products
cpe atlassian/jira

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

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe atlassian/jira< 8.4.0

How to fix CVE-2019-8449

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2019-8449 is not in CISA KEV. FIRST estimates a 85.74% chance of exploitation in the next 30 days. Check whether you run The /rest/api/latest/groupuserpicker resource in.

Which versions are affected?

Compare what you have installed with < 8.4.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-306: Missing Authentication for Critical Function. EPSS 85.74%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Atlassian Jira security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 11, 2019 · Monitored products — critical

    Detected

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

  2. Jun 17, 2026 · Monitored products — critical

    Updated

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

Sources

References

Freshness

Last verified in this catalog Nov 4, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • Packet Storm SecurityNov 6, 2026
  • FIRST EPSSNov 4, 2026
  • CVE.orgNov 4, 2026
  • Monitored products — criticalNov 3, 2026