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CVE-2019-11254

Status: ModifiedMedium (6.5)—

The Kubernetes API Server component in versions 1.1-1.14, and versions prior to 1.15.10, 1.16.7 and 1.17.3 allows an authorized user who sends malicious YAML payloads to cause the kube-apiserver to consume excessive CPU cycles while parsing YAML.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Kubernetes — Kubernetes

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2019-11254",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 4,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:S/C:N/I:N/A:P",
          "authentication": "SINGLE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "jordan@liggitt.net",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.5,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 2.8
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.5,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "jordan@liggitt.net",
      "affectedData": [
        {
          "vendor": "Kubernetes",
          "product": "Kubernetes",
          "versions": [
            {
              "status": "affected",
              "version": "prior to 1.15.10"
            },
            {
              "status": "affected",
              "version": "prior to 1.16.7"
            },
            {
              "status": "affected",
              "version": "prior to 1.17.3"
            },
            {
              "status": "affected",
              "version": "1.1"
            },
            {
              "status": "affected",
              "version": "1.2"
            },
            {
              "status": "affected",
              "version": "1.3"
            },
            {
              "status": "affected",
              "version": "1.4"
            },
            {
              "status": "affected",
              "version": "1.5"
            },
            {
              "status": "affected",
              "version": "1.6"
            },
            {
              "status": "affected",
              "version": "1.7"
            },
            {
              "status": "affected",
              "version": "1.8"
            },
            {
              "status": "affected",
              "version": "1.9"
            },
            {
              "status": "affected",
              "version": "1.10"
            },
            {
              "status": "affected",
              "version": "1.11"
            },
            {
              "status": "affected",
              "version": "1.12"
            },
            {
              "status": "affected",
              "version": "1.13"
            },
            {
              "status": "affected",
              "version": "1.14"
            }
          ]
        }
      ]
    }
  ],
  "published": "2020-04-01T21:15:13.397",
  "references": [
    {
      "url": "https://github.com/kubernetes/kubernetes/issues/89535",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "jordan@liggitt.net"
    },
    {
      "url": "https://groups.google.com/d/msg/kubernetes-announce/ALL9s73E5ck/4yHe8J-PBAAJ",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "jordan@liggitt.net"
    },
    {
      "url": "https://security.netapp.com/advisory/ntap-20200413-0003/",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "jordan@liggitt.net"
    },
    {
      "url": "https://github.com/kubernetes/kubernetes/issues/89535",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://groups.google.com/d/msg/kubernetes-announce/ALL9s73E5ck/4yHe8J-PBAAJ",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://security.netapp.com/advisory/ntap-20200413-0003/",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "jordan@liggitt.net",
      "description": [
        {
          "lang": "en",
          "value": "CWE-1050"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The Kubernetes API Server component in versions 1.1-1.14, and versions prior to 1.15.10, 1.16.7 and 1.17.3 allows an authorized user who sends malicious YAML payloads to cause the kube-apiserver to consume excessive CPU cycles while parsing YAML."
    },
    {
      "lang": "es",
      "value": "El componente Kubernetes API Server en versiones 1.1-1.14 y versiones anteriores a 1.15.10, 1.16.7 y 1.17.3, permite a un usuario autorizado que envía cargas maliciosas de YAML causar que el kube-apiserver consuma ciclos de CPU excesivos mientras analiza YAML."
    }
  ],
  "lastModified": "2026-06-17T02:12:37.900",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "87849953-B423-4E3B-A977-A62A88B40037",
              "versionEndExcluding": "1.15.10"
            },
            {
              "criteria": "cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "3D26FF8F-C943-41DE-A97D-89E8C7AB6348",
              "versionEndExcluding": "1.16.7",
              "versionStartIncluding": "1.16.0"
            },
            {
              "criteria": "cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "95F48D52-C95F-4BBE-87C3-476F8058A37E",
              "versionEndExcluding": "1.17.3",
              "versionStartIncluding": "1.17.0"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "jordan@liggitt.net"
}