CVE-2026-21589
Atlassian Multiple Products Files or Directories Accessible to External Parties Vulnerability
IN CISA KEV
Rejected reason: This CVE's publication may have been a false positive or a mistake. As a result, we have rejected this record.
- Vendor
- Atlassian
- Product
- Multiple Products
- CVSS
- No score recorded
- CWE
- CWE-552
- Published
- 2026-10-05
- NVD modified
- 2026-10-16
- NVD status
- Rejected
CISA KEV
- Date added
- 2026-10-15
- Due date
- 2026-10-18
- Ransomware use
- Unknown
- 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.
EPSS
No EPSS score available for this CVE (new, rejected, or FIRST has not scored it yet).
CVSS is severity, EPSS is likelihood, KEV means already exploited. EPSS is a statistical probability, not a certainty: a low score does not make a bug safe, and a high one does not prove it is being exploited.
ThreatWire coverage
Data last updated 18 Oct 2026. Sources: NVD API 2.0, CISA KEV catalog. Links: NVD, CISA KEV. Metadata only. ThreatWire does not host exploit code.