Atlassian · Multiple Products
CVE-2026-21589
Atlassian Multiple Products Files or Directories Accessible to External Parties Vulnerability
概要
This is a vulnerability in Bitbucket Data Center, Confluence Data Center, Jira Service Management Data Center, Jira Software Data Center, Bamboo Data Center. Crowd Data Center, Crucible and Fisheye. This Arbitrary File Access vulnerability allows an unauthenticated attacker to access specific files within the web application root directory in affected versions. Exploitation requires prior knowledge of the target file's exact name and path; this vulnerability does not allow attackers to enumerate or list directory contents. In some configurations, there may be some sensitive files that make this highly severe. This vulnerability allows an unauthenticated remote attacker to access specific files within the web application root directory in affected versions. The vulnerability must be addressed for affected versions of: -- Bitbucket Data Center, introduced in version >= 4.6.0, fix versions: 9.4.26, 10.2.8, 10.5.1 -- Confluence Data Center, introduced in version >= 5.10.0, fix versions 9.2.26, 10.2.19 -- Crowd Data Center, introduced in version >= 2.11.0, fix versions 6.3.7, 7.0.3, 7.1.7, 7.2.4 -- Jira Software Data Center, introduced in version >= 7.1.0, fix versions 9.12.40, 10.3.26, 11.3.12 -- Jira Service Management Data Center, introduced in version >= 3.1.0, fix versions 5.12.40, 10.3.26, 11.3.12 -- Bamboo Data Center >= 7.0.1, fix versions 10.2.24, 12.1.12 -- Crucible, fix versions 4.9.15 -- Fisheye, fix version 4.9.15 -- Exploitation requires prior knowledge of the target file's exact name and path. The vulnerability does not include the capability to enumerate or list directory contents.
CISA: 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.
対処法
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.
米国連邦機関の対応期限：2026年10月18日
- CISAのリストに追加
- 2026年10月15日
- 公開日
- 2026年10月5日
- 深刻度
- 緊急 9.3 CVSS 4.0
- 今後30日間に攻撃される可能性（EPSS）
- 99.7% 既知の全脆弱性の上位0.1%
- 脆弱性の種類
- CWE-552
- 詳細
- NVD · CVE.org · CISA
すべての参照（8件）
- https://jira.atlassian.com/browse/BAM-26567
- https://jira.atlassian.com/browse/BSERV-20604
- https://jira.atlassian.com/browse/CONFSERVER-104488
- https://jira.atlassian.com/browse/CRUC-8741
- https://jira.atlassian.com/browse/CWD-6610
- https://jira.atlassian.com/browse/FE-7583
- https://jira.atlassian.com/browse/JRASERVER-79546
- https://jira.atlassian.com/browse/JSDSERVER-16809
Atlassianのその他の悪用された脆弱性
| 追加日 | 脆弱性 | 製品 | 深刻度 | 攻撃の可能性 |
|---|---|---|---|---|
| 2024/11/12 | Path Traversal | Jira Server and Data Center | 中 5.3 | >99.9% |
| 2024/01/24 | Template Injection | Confluence Data Center and Server | 緊急 10.0 | >99.9% |
| 2023/11/07 | Improper Authorization | Confluence Data Center and Server | 緊急 10.0 | >99.9% |
| 2023/10/05 | Broken Access Control | Confluence Data Center and Server | 緊急 10.0 | 99.2% |
| 2022/09/30 | Command Injection | Bitbucket Server and Data Center | 高 8.8 | 99% |
| 2022/07/29 | Questions For Confluence App Hard-coded Credentials | Confluence | 緊急 9.8 | 98% |
| 2022/06/02 | Confluence Server and Data Center Remote Code Execution | Confluence Server/Data Center | 緊急 9.8 | >99.9% |
| 2022/03/28 | Pre-Authorization Arbitrary File Read | Confluence Server | 中 5.3 | 99.9% |
出典：Known Exploited Vulnerabilities（CISA、パブリックドメイン）、CVE records（cve.org）、EPSS（FIRST）。攻撃の可能性は、今後30日以内に誰かがその脆弱性の悪用を試みるというEPSSの推定値です。