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CVE-2026-55996 Unauthenticated Denial-of-Service via TLS SAN Stuffing in Rancher and cattle-cluster-agent

🗓️ 05 Aug 2026 07:46:43Reported by suseType 
cvelist
 cvelist
🔗 www.cve.org👁 5 Views

Unauthenticated denial of service on Rancher TLS listeners due to unbounded SAN stuffing from SNI requests.

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Affected
Refs
ReporterTitlePublishedViews
Family
attackerkb
ATTACKERKB
CVE-2026-55996
5 Aug 202607:46
attackerkb
cve
CVE
CVE-2026-55996
5 Aug 202607:46
cve
euvd
EUVD
EUVD-2026-53290
5 Aug 202607:46
euvd
nvd
NVD
CVE-2026-55996
5 Aug 202608:16
nvd
susecve
SUSE CVE
SUSE CVE-2026-55996
31 Jul 202616:37
susecve
vulnrichment
Vulnrichment
CVE-2026-55996 Unauthenticated Denial-of-Service via TLS SAN Stuffing in Rancher and cattle-cluster-agent
5 Aug 202607:46
vulnrichment
[
  {
    "vendor": "SUSE",
    "product": "Rancher",
    "packageName": "Rancher",
    "versions": [
      {
        "status": "affected",
        "version": "2.11.0",
        "lessThan": "2.11.16",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "2.12.0",
        "lessThan": "2.12.12",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "2.13.0",
        "lessThan": "2.13.8",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "2.14.0",
        "lessThan": "2.14.4",
        "versionType": "semver"
      }
    ],
    "defaultStatus": "unaffected"
  }
]

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