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CVE-2026-21588

🗓️ 15 Sep 2026 17:00:00Reported by atlassianType 
cvelist
 cvelist
🔗 www.cve.org👁 7 Views

This High severity DoS (Denial of Service) vulnerability was introduced in versions 8.9.0, 9.0.1, 9.1.0, 9.2.0, 9.3.1, 9.4.0, 9.5.1, 10.0.2, 10.1.0, and 10.2.0 of Confluence Data Center. This DoS (Denial of Service) vulnerability, with a CVSS Scor...

Related
Affected
Refs
ReporterTitlePublishedViews
Family
atlassian
Atlassian
DoS (Denial of Service) in Confluence Data Center
4 Sep 202604:31
atlassian
cve
CVE
CVE-2026-21588
15 Sep 202617:00
cve
euvd
EUVD
EUVD-2026-78937
15 Sep 202617:00
euvd
nvd
NVD
CVE-2026-21588
15 Sep 202617:17
nvd
vulnrichment
Vulnrichment
CVE-2026-21588
15 Sep 202617:00
vulnrichment
[
  {
    "vendor": "Atlassian",
    "product": "Confluence Data Center",
    "versions": [
      {
        "version": "10.2.0 to 10.2.15",
        "status": "affected"
      },
      {
        "version": "10.1.0 to 10.1.2",
        "status": "affected"
      },
      {
        "version": "10.0.2 to 10.0.3",
        "status": "affected"
      },
      {
        "version": "9.5.1 to 9.5.4",
        "status": "affected"
      },
      {
        "version": "9.4.0 to 9.4.1",
        "status": "affected"
      },
      {
        "version": "9.3.1 to 9.3.2",
        "status": "affected"
      },
      {
        "version": "9.2.0 to 9.2.23",
        "status": "affected"
      },
      {
        "version": "9.1.0 to 9.1.1",
        "status": "affected"
      },
      {
        "version": "8.9.7 to 8.9.8",
        "status": "affected"
      },
      {
        "version": "10.2.17 to 10.2.18",
        "status": "unaffected"
      },
      {
        "version": "9.2.24 to 9.2.25",
        "status": "unaffected"
      }
    ]
  }
]

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15 Sep 2026 17:00Current
CVSS 47.1
7