CVE-2026-21589
Atlassian Multiple Products
Parchea ya: se está explotando
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.
En las noticias
- Attackers Target Critical Atlassian Vulnerability Within Hours of PoC Publication · SecurityWeek
- Atacantes aprovechan un fallo crítico en Atlassian Data Center tras publicarse una prueba de concepto · Una al día
- Scans for Atlassian vulnerablity (CVE-2026-21589), (Wed, Oct 7th) · SANS ISC
- Hackers exploit critical Atlassian flaw after public PoC release · BleepingComputer
- Atlassian Data Center Flaw Draws Exploitation Attempts Within Two Hours of Public Details · The Hacker News
- Atlassian warns of critical file-access flaw in Jira, Confluence · BleepingComputer
- Acceso arbitrario a archivos en productos de Atlassian · INCIBE-CERT
- Critical Atlassian Flaw Lets Unauthenticated Attackers Read Known Files Across 8 Products · The Hacker News