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CVE-2026-21588

🗓️ 15 Sep 2026 17:00:00Reported by atlassianType 
cve
 cve
🔗 web.nvd.nist.gov👁 9 Views

Authenticated DoS in Confluence Data Center versions 8.9.0 through 10.2.0 allows service disruption.

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
atlassian
Atlassian
DoS (Denial of Service) in Confluence Data Center
4 Sep 202604:31
atlassian
cvelist
Cvelist
CVE-2026-21588
15 Sep 202617:00
cvelist
euvd
EUVD
EUVD-2026-78937
15 Sep 202617:00
euvd
nvd
NVD
CVE-2026-21588
15 Sep 202617:17
nvd
ptsecurity
Positive Technologies
PT-2026-92137
15 Sep 202600:00
ptsecurity
vulnrichment
Vulnrichment
CVE-2026-21588
15 Sep 202617:00
vulnrichment
Vulners
CNA
[
  {
    "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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16 Sep 2026 00:17Current
5.7Medium risk
Vulners AI Score5.7
CVSS 47.1
SSVC
9