What is CVE-2019-8449?

CVE-2019-8449 is a medium-severity vulnerability in Atlassian Jira, classified under Missing Authentication for Critical Function. CVSS score: 5.3/10. Published 2019-09-11.

How severe is CVE-2019-8449?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Is CVE-2019-8449 known to be exploited?

52 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Auth bypass in Atlassian Jira

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.

Vulnerability class: Broken Authentication

EPSS: 0.848 (99.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

Affected products

Atlassian Jira — versions unspecified

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

Public proof-of-concept exploits

References

security@atlassian.com (x_refsource_CONFIRM, Issue Tracking, Vendor Advisory)
security@atlassian.com (Exploit, VDB Entry, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2019-8449?: CVE-2019-8449 is a medium-severity vulnerability in Atlassian Jira, classified under Missing Authentication for Critical Function. CVSS score: 5.3/10. Published 2019-09-11.
How severe is CVE-2019-8449?: Medium severity. CVSS v3 base score is 5.3 out of 10.
Is CVE-2019-8449 known to be exploited?: 52 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.