{
  "schemaVersion": 1,
  "incident": {
    "id": "cve-2026-21589",
    "url": "https://cveboard.org/i/cve-2026-21589",
    "urlPt": "https://cveboard.org/pt/i/cve-2026-21589",
    "json": "https://cveboard.org/i/cve-2026-21589.json",
    "kind": "vuln",
    "live": true,
    "knownExploited": true,
    "severity": null,
    "title": "Atlassian Multiple Products Files or Directories Accessible to External Parties Vulnerability",
    "summary": "Multiple Atlassian products (Bitbucket Data Center ,Confluence Data Center, Jira Service Management Data Center, Jira Software Data Center, Bamboo Data Center, Crowd Data Center, Crucible and Fisheye) contain a files or directories accessible to external parties vulnerability which could allow an unauthenticated attacker to access specific files within the web application root directory in affected versions.",
    "titlePt": "Vulnerabilidade de arquivos ou diretórios acessíveis a partes externas em múltiplos produtos da Atlassian",
    "summaryPt": "Vários produtos da Atlassian (Bitbucket Data Center, Confluence Data Center, Jira Service Management Data Center, Jira Software Data Center, Bamboo Data Center, Crowd Data Center, Crucible e Fisheye) contêm uma vulnerabilidade de arquivos ou diretórios acessíveis a partes externas que poderia permitir que um atacante não autenticado acesse arquivos específicos dentro do diretório raiz da aplicação web nas versões afetadas.",
    "cves": [
      "CVE-2026-21589"
    ],
    "ghsa": null,
    "cvss": null,
    "epss": null,
    "packages": [],
    "vendor": "Atlassian",
    "product": "Multiple Products",
    "kev": {
      "dateAdded": "2026-10-15",
      "dueDate": "2026-10-18",
      "requiredAction": "Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable.",
      "ransomware": false
    },
    "breach": null,
    "retracted": false,
    "sources": [
      {
        "label": "CISA KEV",
        "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2026-21589"
      }
    ],
    "publishedAt": "2026-10-15T00:00:00.000Z",
    "updatedAt": "2026-10-15T00:00:00.000Z"
  },
  "live": true,
  "events": [
    {
      "id": "kev:CVE-2026-21589:kev_added:2026-10-15T00:00:00.000Z",
      "incidentId": "cve-2026-21589",
      "type": "kev_added",
      "at": "2026-10-15T00:00:00.000Z",
      "detail": {
        "dueDate": "2026-10-18",
        "ransomware": false
      }
    }
  ]
}