{
  "cveId": "CVE-2021-31921",
  "url": "https://patchblox.com/security/cve/CVE-2021-31921",
  "summary": "CVE-2021-31921 is fixed in 16 products on 1 platform, first by ELSA-2021-9396, released August 6, 2021. It is not reported as exploited. Patch Radar priority: High.",
  "title": "istio: Address Istio CVE\u0027s CVE-2021-28683, CVE-2021-28682, CVE-2021-29258, CVE-2021-31920, , CVE-2021-34824",
  "description": "Address Istio CVE\u0027s CVE-2021-28683, CVE-2021-28682, CVE-2021-29258, CVE-2021-31920, , CVE-2021-34824",
  "published": "2021-08-06T00:00:00Z",
  "severity": "IMPORTANT",
  "cvss": 9.8,
  "epss": 0.01454,
  "epssPercentile": 0.73673,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "istio",
      "release": "ol 8",
      "fixedVersion": "0:1.9.6-2.el8",
      "fix": "ELSA-2021-9396",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-9396",
      "released": "2021-08-06T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "istio-istioctl",
      "release": "ol 8",
      "fixedVersion": "0:1.9.6-2.el8",
      "fix": "ELSA-2021-9396",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-9396",
      "released": "2021-08-06T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "istio-pilot-agent",
      "release": "ol 8",
      "fixedVersion": "0:1.9.6-2.el8",
      "fix": "ELSA-2021-9396",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-9396",
      "released": "2021-08-06T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "istio-pilot-discovery",
      "release": "ol 8",
      "fixedVersion": "0:1.9.6-2.el8",
      "fix": "ELSA-2021-9396",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-9396",
      "released": "2021-08-06T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kubeadm",
      "release": "ol 8",
      "fixedVersion": "0:1.18.18-3.el8",
      "fix": "ELSA-2021-9396",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-9396",
      "released": "2021-08-06T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kubectl",
      "release": "ol 8",
      "fixedVersion": "0:1.18.18-3.el8",
      "fix": "ELSA-2021-9396",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-9396",
      "released": "2021-08-06T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kubelet",
      "release": "ol 8",
      "fixedVersion": "0:1.18.18-3.el8",
      "fix": "ELSA-2021-9396",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-9396",
      "released": "2021-08-06T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "olcne-agent",
      "release": "ol 8",
      "fixedVersion": "0:1.2.4-5.el8",
      "fix": "ELSA-2021-9396",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-9396",
      "released": "2021-08-06T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "olcne-api-server",
      "release": "ol 8",
      "fixedVersion": "0:1.2.4-5.el8",
      "fix": "ELSA-2021-9396",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-9396",
      "released": "2021-08-06T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "olcne-grafana-chart",
      "release": "ol 8",
      "fixedVersion": "0:1.3.1-5.el8",
      "fix": "ELSA-2021-9398",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-9398",
      "released": "2021-08-06T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "olcne-istio-chart",
      "release": "ol 8",
      "fixedVersion": "0:1.2.4-5.el8",
      "fix": "ELSA-2021-9396",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-9396",
      "released": "2021-08-06T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "olcne-nginx",
      "release": "ol 8",
      "fixedVersion": "0:1.2.4-5.el8",
      "fix": "ELSA-2021-9396",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-9396",
      "released": "2021-08-06T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "olcne-olm-chart",
      "release": "ol 8",
      "fixedVersion": "0:1.3.1-5.el8",
      "fix": "ELSA-2021-9398",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-9398",
      "released": "2021-08-06T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "olcne-prometheus-chart",
      "release": "ol 8",
      "fixedVersion": "0:1.2.4-5.el8",
      "fix": "ELSA-2021-9396",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-9396",
      "released": "2021-08-06T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "olcne-utils",
      "release": "ol 8",
      "fixedVersion": "0:1.2.4-5.el8",
      "fix": "ELSA-2021-9396",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-9396",
      "released": "2021-08-06T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "olcnectl",
      "release": "ol 8",
      "fixedVersion": "0:1.2.4-5.el8",
      "fix": "ELSA-2021-9396",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-9396",
      "released": "2021-08-06T00:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-11T01:43:54Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}