What is CVE-2019-8446?

CVE-2019-8446 is a medium-severity vulnerability in Atlassian Jira, classified under Incorrect Authorization. CVSS score: 5.3/10. Published 2019-08-23.

How severe is CVE-2019-8446?

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

Is CVE-2019-8446 known to be exploited?

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

Auth bypass in Atlassian Jira

CVE-2019-8446

The /rest/issueNav/1/issueTable resource in Jira before version 8.3.2 allows remote attackers to enumerate usernames via an incorrect authorisation check.

Vulnerability class: Broken Access Control

Published 2019-08-23 · last modified 2026-06-17.

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.

EPSS exploit prediction

EPSS: 0.175 (97.0th percentile), scored 2026-10-01.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 97.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.175 · newest: 0.175 · change: 0.000

Affected products

Atlassian Jira — versions unspecified
Atlassian Jira Server

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

Public proof-of-concept exploits

References

jira.atlassian.com/browse/JRASERVER-69777 (Vendor Advisory)
www.talosintelligence.com/vulnerability_reports/TALOS-2019-0839 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2019-8446?: CVE-2019-8446 is a medium-severity vulnerability in Atlassian Jira, classified under Incorrect Authorization. CVSS score: 5.3/10. Published 2019-08-23.
How severe is CVE-2019-8446?: Medium severity. CVSS v3 base score is 5.3 out of 10.
Is CVE-2019-8446 known to be exploited?: 9 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.