{"id":"CVE-2019-11253","url":"https://www.cyber-defence.io/tools/cve/CVE-2019-11253","generatedAt":"2026-10-28T21:26:52.635Z","title":"Improper input validation in the Kubernetes API server in versions v1.0-1.12 and versions prior to v1.13.12, v1.14.8, v1.15.5, and v1.16.2 allows authorized users to send malicious YAML or JSON payloads, causing the API server to consume excessive CPU…","description":"Improper input validation in the Kubernetes API server in versions v1.0-1.12 and versions prior to v1.13.12, v1.14.8, v1.15.5, and v1.16.2 allows authorized users to send malicious YAML or JSON payloads, causing the API server to consume excessive CPU or memory, potentially crashing and becoming unavailable. Prior to v1.14.0, default RBAC policy authorized anonymous users to submit requests that could trigger this vulnerability. Clusters upgraded from a version prior to v1.14.0 keep the more permissive policy by default for backwards compatibility.","published":"2019-10-17T16:15:10.000Z","lastModified":"2026-06-17T02:12:38.000Z","status":"Analyzed","sourceIdentifier":"jordan@liggitt.net","cvss":{"version":"3.1","score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"cwe":["CWE-20","CWE-776"],"affected":["kubernetes/kubernetes","redhat/openshift container platform"],"epss":{"score":0.25939,"percentile":0.9797,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 25.9%, higher than 98% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"https://access.redhat.com/errata/RHSA-2019:3239","tags":["Third Party Advisory"],"source":"jordan@liggitt.net"},{"url":"https://access.redhat.com/errata/RHSA-2019:3811","tags":["Third Party Advisory"],"source":"jordan@liggitt.net"},{"url":"https://access.redhat.com/errata/RHSA-2019:3905","tags":["Third Party Advisory"],"source":"jordan@liggitt.net"},{"url":"https://github.com/kubernetes/kubernetes/issues/83253","tags":["Exploit","Issue Tracking","Mitigation","Third Party Advisory"],"source":"jordan@liggitt.net"},{"url":"https://groups.google.com/forum/#%21topic/kubernetes-security-announce/jk8polzSUxs","tags":["Permissions Required"],"source":"jordan@liggitt.net"},{"url":"https://security.netapp.com/advisory/ntap-20191031-0006/","tags":["Third Party Advisory"],"source":"jordan@liggitt.net"},{"url":"https://access.redhat.com/errata/RHSA-2019:3239","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2019:3811","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2019:3905","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/kubernetes/kubernetes/issues/83253","tags":["Exploit","Issue Tracking","Mitigation","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://groups.google.com/forum/#%21topic/kubernetes-security-announce/jk8polzSUxs","tags":["Permissions Required"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.netapp.com/advisory/ntap-20191031-0006/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2019-11253","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}