CVE-2020-14181: Atlassian Jira Server vulnerability

CVE-2020-14181: Affected versions of Atlassian Jira Server and Data Center allow an unauthenticated user to enumerate users...

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.

UnknownCVSS not scoredNot KEV-listedUpdatedSep 16, 2024, 21:57 UTC (UTC+00:00)

Security readout for executives and security teams

CVE-2020-14181 lets an unauthenticated person discover Jira user accounts through a Jira Server/Data Center endpoint. It is not described as direct system takeover, but exposed usernames can support phishing, credential attacks, and reconnaissance against internal teams. Internet-facing or partner-accessible Jira Server/Data Center instances in the affected version ranges have the clearest exposure, especially where unauthenticated requests can reach Jira. Treat this as a near-term hygiene fix for exposed Jira systems. It is unlikely to be a standalone breach path, but it can materially improve attacker targeting. Mitigation focus: Upgrade affected Jira instances to 7.13.6, 8.5.7, 8.12.0, or later applicable fixed releases.; Prioritize externally reachable Jira Server/Data Center systems first.; Review Atlassian advisory guidance before applying compensating controls..

Prepared: Jun 3, 2026, 10:39 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Sep 17, 2020, 00:35 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

2Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
https://jira.atlassian.com/browse/JRASERVER-71560CVE reference · x_refsource_MISC

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

AtlassianJira Serverunspecified, 8.0.0, unspecified, 8.6.0, unspecifiedListed

Weakness

CWE details

No CWE listed

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