Set of Wed 21 Oct 2026

01 · Exploited CVE of the day

Atlassian · Multiple Products

CVE-2026-21589

Atlassian Multiple Products Files or Directories Accessible to External Parties Vulnerability

In CISA KEV since

15 Oct 2026

Ransomware use

Unknown

EPSS

0.127 · top 4%scored 20 Oct 2026

CVSS

9.3v4.0 · CNA

CISA remediation due 18 Oct 2026

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• EPSS 30-day trend
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Picked: highest EPSS among KEV additions of the last 7 days, ransomware use as tie-break.