KRITIEK · CVSS 9.3
ACTIEF MISBRUIKT
PATCH BESCHIKBAAR
CVE-2026-21589: Atlassian Multiple Products Files or Directories Accessible to External Parties Vulnerability
| Leverancier | Atlassian |
|---|---|
| Product | Multiple Products |
| CVSS-score | 9.3 · CVSS 4.0 · KRITIEKCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
| EPSS | 99,7% (percentiel 100) |
| Actief misbruikt | Ja |
| Toegevoegd aan CISA KEV | 15 okt 2026 |
| CISA-deadline (Amerikaanse overheid) | 18 okt 2026 |
| Zwakte (CWE) | CWE-552 |
| Gepubliceerd in NVD | 5 okt 2026 |
| Laatst gewijzigd in NVD | 29 okt 2026 |
| NVD-status | Analyzed |
Getroffen versies
| Product | Getroffen versies | Opgelost in |
|---|---|---|
| Atlassian Bamboo | vanaf 7.0.1 vóór 10.2.24 | 10.2.24 |
| Atlassian Bamboo | vanaf 11.0.0 vóór 12.1.12 | 12.1.12 |
| Atlassian Bitbucket Data Center | vanaf 9.5.0 vóór 10.2.8 | 10.2.8 |
| Atlassian Bitbucket Data Center | vanaf 10.3.0 vóór 10.5.1 | 10.5.1 |
| Atlassian Bitbucket Data Center | vanaf 7.17.0 vóór 9.4.26 | 9.4.26 |
| Atlassian Bitbucket Server | vanaf 4.6.0 tot en met 8.14.6 | – |
| Atlassian Confluence Data Center | vanaf 9.3.0 vóór 10.2.19 | 10.2.19 |
| Atlassian Confluence Data Center | vanaf 5.10.0 vóór 9.2.26 | 9.2.26 |
| Atlassian Crowd | vanaf 2.11.0 vóór 6.3.7 | 6.3.7 |
| Atlassian Crowd | vanaf 7.0.0 vóór 7.0.3 | 7.0.3 |
| Atlassian Crowd | vanaf 7.1.0 vóór 7.1.7 | 7.1.7 |
| Atlassian Crowd | vanaf 7.2.0 vóór 7.2.4 | 7.2.4 |
| Atlassian Crucible | vóór 4.9.15 | 4.9.15 |
| Atlassian Fisheye | vóór 4.9.15 | 4.9.15 |
| Atlassian Jira Data Center | vanaf 9.13.0 vóór 10.3.26 | 10.3.26 |
| Atlassian Jira Data Center | vanaf 10.4.0 vóór 11.3.12 | 11.3.12 |
| Atlassian Jira Data Center | vanaf 7.1.0 vóór 9.12.40 | 9.12.40 |
| Atlassian Jira Service Desk | vanaf 3.1.0 tot en met 4.13.27 | – |
| Atlassian Jira Service Management | vanaf 5.13.0 vóór 10.3.26 | 10.3.26 |
| Atlassian Jira Service Management | vanaf 10.4.0 vóór 11.3.12 | 11.3.12 |
+1 meer
Vereiste actie (tekst van CISA, Engels)
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.
Beschrijving (NVD, Engels)
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.
BRONNEN
- NVDNVD entry for CVE-2026-21589
- CISA KEVCISA Known Exploited Vulnerabilities catalog
- VENDORjira.atlassian.com/browse/BAM-26567
- VENDORjira.atlassian.com/browse/BSERV-20604
- VENDORjira.atlassian.com/browse/CONFSERVER-104488
- VENDORjira.atlassian.com/browse/CRUC-8741
- VENDORjira.atlassian.com/browse/CWD-6610
- VENDORjira.atlassian.com/browse/FE-7583
- VENDORjira.atlassian.com/browse/JRASERVER-79546
- VENDORjira.atlassian.com/browse/JSDSERVER-16809
Andere lekken bij Atlassian
- CVE-2021-26086: Atlassian Jira Server and Data Center Path Traversal Vulnerability
- CVE-2023-22527: Atlassian Confluence Data Center and Server Template Injection Vulnerability
- CVE-2023-22518: Atlassian Confluence Data Center and Server Improper Authorization Vulnerability
- CVE-2023-22515: Atlassian Confluence Data Center and Server Broken Access Control Vulnerability
- CVE-2022-36804: Atlassian Bitbucket Server and Data Center Command Injection Vulnerability
Gegevens van NVD, CISA KEV, FIRST EPSS en adviezen van leveranciers. Bijgewerkt 29 okt 2026.