KEV Entry

CVE-2026-21589

Known Exploited Vulnerability Entry Previdian

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Entry Details
Confirmed Exploited

CVE-2026-21589

2026-10-06 21:55 UTC

Timestamps

2026-10-06

2026-10-06

Scope

This is a vulnerability in Bitbucket Data Center, Confluence Data Center, Jira Service Management Data Center, Jira Software Data Center, Bamboo... | Affected: Atlassian / Bamboo Data Center, Bitbucket Data Center, Confluence Data Center, Crowd Data Center, Crucible Data Center, Fisheye Data Center, Jira Service Management Data Center, Jira Software Data Center | CVSS: 9.3 (CRITICAL) | EPSS: 0.00738 | Used in malware: unknown | Not yet in CISA KEV: True

References
  • {'id': 'CVE-2026-21589', 'url': 'https://www.cve.org/CVERecord?id=CVE-2026-21589'}
  • {'id': 'previdian', 'url': 'https://previdian.com/CVE-2026-21589'}

ca794994-53b1-4f27-8263-ee62a3eb8e2c

Previdian
caeb2787-0d58-4236-9039-7c86c3e566f3

2026-10-07 22:00 UTC

2026-10-07 22:00 UTC

Evidence
1
Type Source Signal Confidence Details GCVE Metadata
public_report previdian successful_exploitation 0.70
View details 
{
  "added_date": "2026-10-06T21:55:50.336Z",
  "ahead_of_cisa_kev": null,
  "cve_id": "CVE-2026-21589",
  "cvss_estimated": false,
  "cvss_score": 9.3,
  "cvss_severity": "CRITICAL",
  "epss_percentile": 0.53045,
  "epss_score": 0.00738,
  "feed": "Previdian (previdian.com)",
  "ghsa_id": null,
  "not_yet_in_cisa_kev": true,
  "previous_ids": [],
  "product": "Bamboo Data Center, Bitbucket Data Center, Confluence Data Center, Crowd Data Center, Crucible Data Center, Fisheye Data Center, Jira Service Management Data Center, Jira Software Data Center",
  "title": "This is a vulnerability in Bitbucket Data Center, Confluence Data Center, Jira Service Management Data Center, Jira Software Data Center, Bamboo...",
  "used_in_malware": "unknown",
  "vendor": "Atlassian",
  "virtual_patch": true,
  "vulnerability_id": "CVE-2026-21589"
}
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