How severe is CVE-2019-8446?

CVE-2019-8446 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2019-8446 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 18% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-8446?

CVE-2019-8446 affects Atlassian Jira Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-8446?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2019-8446 published?

CVE-2019-8446 was published on 2019-08-23 and last updated on 2026-06-17.

CVE-2019-8446

CVE-2019-8446 is a medium-severity vulnerability in Atlassian Jira Server with a CVSS 3.x base score of 5.3. Its EPSS exploit-prediction score of 18% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-863.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 18% (97th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-863
Affected product: Atlassian Jira Server
Published: 2019-08-23
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is 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.
How severe is CVE-2019-8446?: CVE-2019-8446 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2019-8446 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 18% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-8446?: CVE-2019-8446 affects Atlassian Jira Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-8446?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-8446 published?: CVE-2019-8446 was published on 2019-08-23 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:atlassian:jira_server:*:*:*:*:*:*:*:*

More vulnerabilities in Atlassian Jira Server

CVE-2022-26136 — Critical (CVSS 9.8): A vulnerability in multiple Atlassian products allows a remote, unauthenticated attacker to bypass Servlet Filters used…
CVE-2022-0540 — Critical (CVSS 9.8): A vulnerability in Jira Seraph allows a remote, unauthenticated attacker to bypass authentication by sending a…
CVE-2019-11581 — Critical (CVSS 9.8): There was a server-side template injection vulnerability in Jira Server and Data Center, in the ContactAdministrators…
CVE-2025-22157 — High (CVSS 8.8): This High severity PrivEsc (Privilege Escalation) vulnerability was introduced in versions: 9.12.0, 10.3.0, 10.4.0,…
CVE-2024-21683 — High (CVSS 8.8): This High severity RCE (Remote Code Execution) vulnerability was introduced in version 5.2 of Confluence Data Center…
CVE-2022-26137 — High (CVSS 8.8): A vulnerability in multiple Atlassian products allows a remote, unauthenticated attacker to cause additional Servlet…

All CVEs affecting Atlassian Jira Server →

Other CWE-863 (Incorrect Authorization) vulnerabilities

CVE-2026-48286 — Critical (CVSS 10.0): Adobe Campaign Classic (ACC) versions 7.4.3 build 9396 and earlier are affected by an Incorrect Authorization…
CVE-2026-48303 — Critical (CVSS 10.0): Adobe Campaign Classic (ACC) versions 7.4.3 build 9394 and earlier are affected by an Incorrect Authorization…
CVE-2026-44330 — Critical (CVSS 10.0): free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's NEF mounts the…
CVE-2026-46595 — Critical (CVSS 10.0): Previously, CVE-2024-45337 fixed an authorization bypass for misused ssh server configurations; if any other type of…
CVE-2026-33105 — Critical (CVSS 10.0): Improper authorization in Microsoft Azure Kubernetes Service allows an unauthorized attacker to elevate privileges over…
CVE-2026-32213 — Critical (CVSS 10.0): Improper authorization in Azure AI Foundry allows an unauthorized attacker to elevate privileges over a network.

Browse all CWE-863 (Incorrect Authorization) vulnerabilities →