Description
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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Kubernetes | Kubernetes | prior to 1.15.10, prior to 1.16.7, prior to 1.17.3, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 1.10, 1.11, 1.12, 1.13, 1.14 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | kubernetes | 1.17.4-1 | — |
| Debian 13 | kubernetes | 1.17.4-1 | — |
| Debian 12 | kubernetes | 1.17.4-1 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat OpenShift 4 | machine-config-daemon | 4.5.0-202007012112.p0.git.2527.d12c3da.el8 | RHSA-2020:2413 |
| Red Hat OpenShift 4 | openshift +1 | 4.5.0-202007012112.p0.git.0.582d7fc.el7 | RHSA-2020:2413 |
| Red Hat OpenShift 3 | atomic-openshift +12 | 3.11.232-1.git.0.a5bc32f.el7 | RHSA-2020:2479 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SUSE Package Hub 15 SP6 | etcd | 3.5.12-bp156.4.3.1 | openSUSE-SU-2025:0003-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | etcd | 3.5.2-1.1 | openSUSE-SU-2024:11911-1 |
| openSUSE Leap 15.6 | etcd | 3.5.12-bp156.4.3.1 | openSUSE-SU-2025:0003-1 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | buildah | 1.41.4-2 | — |
| Azure Linux 3 | delve +1 | No fix yet | — |
| Azure Linux 3 | podman | 5.6.1-2 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | cri-o +1 | 1.14.7-1.0.7.el7 | ELSA-2020-5653 |
| Oracle Linux 7 | cri-tools | 1.14.0-1.0.5.el7 | ELSA-2020-5653 |
| Oracle Linux 7 | kubeadm +2 | 1.14.9-1.0.3.el7 | ELSA-2020-5653 |
| Oracle Linux 7 | olcnectl +4 | 1.0.3-1.el7 | ELSA-2020-5653 |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | k3d +2 | 5.6.0-r11 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | github.com/go-yaml/yaml | <= 2.1.0 | — | GHSA-wxc4-f4m6-wwqv |
| Go | github.com/go-yaml/yaml | all versions | — | GO-2020-0036 |
| Go | gopkg.in/yaml.v2 | < 2.2.8 | 2.2.8 | GHSA-wxc4-f4m6-wwqv |
Advisories 6
- RHSA-2020:2413 Red Hat Security Advisory: OpenShift Container Platform 4.5 package security update Red Hat Security Advisories (RHSA) · Oct 19, 2026
- RHSA-2020:2479 Red Hat Security Advisory: OpenShift Container Platform 3.11 atomic-openshift security update Red Hat Security Advisories (RHSA) · Aug 5, 2026
- WID-SEC-2022-0510 IBM DB2: Mehrere Schwachstellen BSI CERT-Bund (WID) · May 18, 2026
- openSUSE-SU-2024:11911-1 etcd-3.5.2-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2025:0003-1 Security update for etcd SUSE / openSUSE Security Updates · Feb 4, 2026
- ELSA-2020-5653 Important: olcne kubernetes security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Apr 17, 2020