{"cve":"CVE-2019-11253","nvd":{"published":"2019-10-17T16:15:10.443","modified":"2026-06-17T02:12:37.717","status":"Analyzed","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-776","CWE-20"],"references":["https://access.redhat.com/errata/RHSA-2019:3239","https://access.redhat.com/errata/RHSA-2019:3811","https://access.redhat.com/errata/RHSA-2019:3905","https://github.com/kubernetes/kubernetes/issues/83253","https://groups.google.com/forum/#%21topic/kubernetes-security-announce/jk8polzSUxs"],"products":["kubernetes:kubernetes","redhat:openshift_container_platform"],"source":"nvd","synced_at":"2026-10-19T20:59:10.855360465+00:00"},"epss":{"cve":"CVE-2019-11253","score":0.25939,"percentile":0.97982,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-pmqp-h87c-mr78","url":"https://osv.dev/vulnerability/GHSA-pmqp-h87c-mr78","summary":"XML Entity Expansion and Improper Input Validation in Kubernetes API server","modified":"2026-09-10T03:49:05.160246223Z","packages":[{"ecosystem":"Go","name":"k8s.io/kubernetes","purl":"pkg:golang/k8s.io/kubernetes","ranges":[">=1.0.0 <1.13.12"],"fixed":["1.13.12"]},{"ecosystem":"Go","name":"k8s.io/kubernetes","purl":"pkg:golang/k8s.io/kubernetes","ranges":[">=1.14.0 <1.14.8"],"fixed":["1.14.8"]},{"ecosystem":"Go","name":"k8s.io/kubernetes","purl":"pkg:golang/k8s.io/kubernetes","ranges":[">=1.15.0 <1.15.5"],"fixed":["1.15.5"]},{"ecosystem":"Go","name":"k8s.io/kubernetes","purl":"pkg:golang/k8s.io/kubernetes","ranges":[">=1.16.0 <1.16.2"],"fixed":["1.16.2"]}]},{"id":"GO-2022-0703","url":"https://osv.dev/vulnerability/GO-2022-0703","summary":"XML Entity Expansion and Improper Input Validation in Kubernetes API server in k8s.io/kubernetes","modified":"2026-02-04T02:27:31.453406Z","packages":[{"ecosystem":"Go","name":"k8s.io/kubernetes","purl":"pkg:golang/k8s.io/kubernetes","ranges":[">=1.0.0 <1.13.12",">=1.14.0 <1.14.8",">=1.15.0 <1.15.5",">=1.16.0 <1.16.2"],"fixed":["1.13.12","1.14.8","1.15.5","1.16.2"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}