vulnerability
Kubernetes: CVE-2019-11253: Improper input validation in the Kubernetes API server
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:N/AC:L/Au:N/C:N/I:N/A:P) | Oct 17, 2019 | Oct 28, 2019 | Aug 11, 2025 |
Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
Oct 17, 2019
Added
Oct 28, 2019
Modified
Aug 11, 2025
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.
Solutions
kubernetes-upgrade-1_13_0kubernetes-upgrade-1_13_12kubernetes-upgrade-1_14_8kubernetes-upgrade-1_15_5kubernetes-upgrade-1_16_2
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