How severe is CVE-2020-14181?

CVE-2020-14181 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-2020-14181 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 100% (100th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-14181?

CVE-2020-14181 primarily affects Atlassian Data Center. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-14181?

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

When was CVE-2020-14181 published?

CVE-2020-14181 was published on 2020-09-17 and last updated on 2026-06-17.

CVE-2020-14181

CVE-2020-14181 is a medium-severity vulnerability in Atlassian Data Center with a CVSS 3.x base score of 5.3. Its EPSS exploit-prediction score of 100% places it in the 100th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-200.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 100% (100th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Atlassian Data Center
Published: 2020-09-17
Last modified: 2026-06-17

Description

Affected versions of Atlassian Jira Server and Data Center allow an unauthenticated user to enumerate users via an Information Disclosure vulnerability in the /ViewUserHover.jspa endpoint. The affected versions are before version 7.13.6, from version 8.0.0 before 8.5.7, and from version 8.6.0 before 8.12.0.

Frequently asked questions

What is CVE-2020-14181?: Affected versions of Atlassian Jira Server and Data Center allow an unauthenticated user to enumerate users via an Information Disclosure vulnerability in the /ViewUserHover.jspa endpoint. The affected versions are before version 7.13.6, from version 8.0.0 before 8.5.7, and from version 8.6.0 before 8.12.0.
How severe is CVE-2020-14181?: CVE-2020-14181 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-2020-14181 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 100% (100th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-14181?: CVE-2020-14181 primarily affects Atlassian Data Center. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-14181?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-14181 published?: CVE-2020-14181 was published on 2020-09-17 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:a:atlassian:data_center:*:*:*:*:*:*:*:*
cpe:2.3:a:atlassian:jira:*:*:*:*:*:*:*:*
cpe:2.3:a:atlassian:jira_server:*:*:*:*:*:*:*:*

More vulnerabilities in Atlassian Data Center

CVE-2017-18113 — High (CVSS 8.8): The DefaultOSWorkflowConfigurator class in Jira Server and Jira Data Center before version 8.18.1 allows remote…
CVE-2021-41312 — High (CVSS 7.5): Affected versions of Atlassian Jira Server and Data Center allow a remote attacker who has had their access revoked…
CVE-2021-39123 — High (CVSS 7.5): Affected versions of Atlassian Jira Server and Data Center allow unauthenticated remote attackers to impact the…
CVE-2021-39113 — High (CVSS 7.5): Affected versions of Atlassian Jira Server and Data Center allow anonymous remote attackers to continue to view cached…
CVE-2021-43947 — High (CVSS 7.2): Affected versions of Atlassian Jira Server and Data Center allow remote attackers with administrator privileges to…
CVE-2021-26070 — High (CVSS 7.2): Affected versions of Atlassian Jira Server and Data Center allow remote attackers to evade behind-the-firewall…

All CVEs affecting Atlassian Data Center →

Other CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor) vulnerabilities

CVE-2026-27604 — Critical (CVSS 10.0): FOSSBilling is a free, open-source billing and client management system. Starting in version 0.5.4 and prior to version…
CVE-2026-40965 — Critical (CVSS 10.0): Cloud Foundry UAA versions v76.12.0 through v78.12.0 are vulnerable to a private key exposure. The server contains a…
CVE-2026-42826 — Critical (CVSS 10.0): Exposure of sensitive information to an unauthorized actor in Azure DevOps allows an unauthorized attacker to disclose…
CVE-2025-29270 — Critical (CVSS 10.0): Incorrect access control in the realtime.cgi endpoint of Deep Sea Electronics devices DSE855 v1.1.0 to v1.1.26 allows…
CVE-2025-61481 — Critical (CVSS 10.0): An issue in MikroTik RouterOS v.7.14.2 and SwOS v.2.18 exposes the WebFig management interface over cleartext HTTP by…
CVE-2025-53624 — Critical (CVSS 10.0): The Docusaurus gists plugin adds a page to your Docusaurus instance, displaying all public gists of a GitHub user.…

Browse all CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor) vulnerabilities →