[悪用確認] CVE-2026-21589: Atlassian Multiple Products Files or Directories Accessible to External Parties Vulnerability

Atlassian Multiple Products 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. 対応: 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. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines. (期限 2026-10-18)

CISA Known Exploited Vulnerabilities에서 읽기

2026. 10. 15. 오전 09:00, CISA Known Exploited Vulnerabilities에서 "[悪用確認] CVE-2026-21589: Atlassian Multiple Products Files or Directories Accessible to External Parties Vulnerability"을(를) 게시했습니다 (유형: 취약점 권고). 심각도는 "긴급"(critical)입니다. 관련 기술: Atlassian (Jira / Confluence / Bitbucket). CVE: CVE-2026-21589.