CVE intelligence and bounded remediation

CVE-2019-20404 — Atlassian Jira Data Center security vulnerability

Medium CVSS 4.3

The API in Atlassian Jira Server and Data Center before version 8.6.0 allows authenticated remote attackers to determine project titles they do not have access to via an improper authorization vulnerability.

Severity
Medium
CVSS
4.3 (3.1)
Published
2020-02-06
CISA KEV
Not currently listed
Ecosystem
software/application

Affected products

  • atlassian / jira_data_center
  • atlassian / jira_server

Showing 2 representative product identities from 4 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Authorization bypass, IDOR, and cross-tenant access

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Check exposure

  • Map object and action authorization checks across API, UI, batch, import/export, and background-job paths.
  • Identify tenant, ownership, role, and policy boundaries for affected resources and administrative operations.
  • Use synthetic fixtures to compare intended access matrices without accessing another user's real data.

Remediate safely

  • Enforce server-side authorization at each resource access and state transition using the authenticated principal and trusted tenant context.
  • Scope data queries by tenant and ownership; treat client-supplied identifiers, roles, and policy claims as untrusted.
  • Add deny-by-default policy tests for horizontal and vertical access across every affected transport.

Authoritative sources

Complete CVE record and remediation plan

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