Bollettino del 15 ottobre 2026
CVE-2026-21589: Multiple Products (Atlassian)
Vulnerabilità già sfruttata in attacchi reali, punteggio 7,5 su 10, in Multiple Products (Atlassian). Sfruttabile da remoto, via rete, senza credenziali, senza che nessuno faccia nulla.
- Gravità
- 7,5 su 10 (high)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Sfruttamento
- Sfruttata in attacchi reali (catalogo CISA KEV).
- Scadenza CISA
- Le agenzie federali USA devono correggerla entro il 18 ottobre 2026: un buon riferimento anche per voi.
- Tipo di difetto
- CWE-552
- Pubblicata
- 5 ottobre 2026
Descrizione originale
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.
Required action: 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.