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CVE-2020-8552

Kubernetes API server denial of service

5.3 MediumFix available

The Kubernetes API server component in versions prior to 1.15.9, 1.16.0-1.16.6, and 1.17.0-1.17.2 has been found to be vulnerable to a denial of service attack via successful API requests.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
Low

Exploit likelihood

2.84%Up 1.6 points since Apr 14, 2021
90%50%10%1%

What each source reports

CVE List Score used 5.3

Kubernetes API server denial of service

The Kubernetes API server component in versions prior to 1.15.9, 1.16.0-1.16.6, and 1.17.0-1.17.2 has been found to be vulnerable to a denial of service attack via successful API requests.

Record
CVE-2020-8552
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weakness
CWE-789
Updated
2026-11-02
EUVDEUVD-2022-0898 5.3

The Kubernetes API server component in versions prior to 1.15.9, 1.16.0-1.16.6, and 1.17.0-1.17.2 has been found to be vulnerable to a denial of service attack via successful API requests.

Record
EUVD-2022-0898
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Updated
2026-11-03
GitHub AdvisoriesGHSA-82hx-w2r5-c2wq 5.3

Kubernetes API Server DoS Via API Requests

The Kubernetes API server component in Kubernetes versions prior to 1.15.9, 1.16.0-1.16.6, and 1.17.0-1.17.2 has been found to be vulnerable to a denial of service attack via successful API requests.

Record
GHSA-82hx-w2r5-c2wq
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weakness
CWE-400, CWE-770, CWE-789
Updated
2026-11-02
NVD 5.3

The Kubernetes API server component in versions prior to 1.15.9, 1.16.0-1.16.6, and 1.17.0-1.17.2 has been found to be vulnerable to a denial of service attack via successful API requests.

Record
CVE-2020-8552
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS 3.1
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
CVSS 2.0
4.0 MediumAV:N/AC:L/Au:S/C:N/I:N/A:P
Weakness
CWE-789, CWE-770
Updated
2026-11-02
OSV 4.3

The Kubernetes API server component in versions prior to 1.15.9, 1.16.0-1.16.6, and 1.17.0-1.17.2 has been found to be vulnerable to a denial of service attack via successful API requests.

Record
CVE-2020-8552
CVSS 3.1
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Updated
2026-11-02
OSVDEBIAN-CVE-2020-8552 4.3

The Kubernetes API server component in versions prior to 1.15.9, 1.16.0-1.16.6, and 1.17.0-1.17.2 has been found to be vulnerable to a denial of service attack via successful API requests.

Record
DEBIAN-CVE-2020-8552
CVSS 3.1
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Updated
2026-11-02
Show 6 moreShow less
OSVGHSA-82hx-w2r5-c2wq 5.3

Kubernetes API Server DoS Via API Requests

The Kubernetes API server component in Kubernetes versions prior to 1.15.9, 1.16.0-1.16.6, and 1.17.0-1.17.2 has been found to be vulnerable to a denial of service attack via successful API requests.

Record
GHSA-82hx-w2r5-c2wq
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weakness
CWE-400, CWE-770, CWE-789
Updated
2026-11-02
OSVRHBA-2020:0929 4.3

Red Hat Bug Fix Advisory: OpenShift Container Platform 4.3.9 packages update

Record
RHBA-2020:0929
CVSS 3.1
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Updated
2026-11-02
OSVRHBA-2020:2215 4.3

Red Hat Bug Fix Advisory: OpenShift Container Platform 3.11 bug fix and enhancement update

Record
RHBA-2020:2215
CVSS 3.1
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Updated
2026-11-02
OSVRHSA-2020:1527 4.3

Red Hat Security Advisory: OpenShift Container Platform 4.2.29 openshift security update

Record
RHSA-2020:1527
CVSS 3.1
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Updated
2026-11-02
OSVRHSA-2020:2992 7.5

Red Hat Security Advisory: OpenShift Container Platform 3.11 security update

Record
RHSA-2020:2992
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2020-8552 5.3

The Kubernetes API server component in versions prior to 1.15.9, 1.16.0-1.16.6, and 1.17.0-1.17.2 has been found to be vulnerable to a denial of service attack via successful API requests.

Record
UBUNTU-CVE-2020-8552
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS 3.1
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
k8s.io/apiserver
Go
 before 0.15.10
0.15.10
k8s.io/apiserver
Go
 0.16.0 up to 0.16.7
0.16.7
k8s.io/apiserver
Go
 0.17.0 up to 0.17.3
0.17.3
kubernetes
Debian:12
 before 1.17.4-1
1.17.4-1
kubernetes
Debian:13
 before 1.17.4-1
1.17.4-1
kubernetes
Debian:14
 before 1.17.4-1
1.17.4-1
openshift
Red Hat:openshift:4.3::el7
 before 0:4.3.9-202003230116.git.0.ebf9a26.el7
0:4.3.9-202003230116.git.0.ebf9a26.el7
openshift-hyperkube
Red Hat:openshift:4.3::el7
 before 0:4.3.9-202003230116.git.0.ebf9a26.el7
0:4.3.9-202003230116.git.0.ebf9a26.el7
openshift
Red Hat:openshift:4.3::el8
 before 0:4.3.9-202003230116.git.0.ebf9a26.el8
0:4.3.9-202003230116.git.0.ebf9a26.el8
openshift-hyperkube
Red Hat:openshift:4.3::el8
 before 0:4.3.9-202003230116.git.0.ebf9a26.el8
0:4.3.9-202003230116.git.0.ebf9a26.el8
Show 60 moreShow less
Affected packages
PackageAffectedFixed
atomic-enterprise-service-catalog
Red Hat:openshift:3.11::el7
 before 1:3.11.219-1.git.1.717017c.el7
1:3.11.219-1.git.1.717017c.el7
atomic-enterprise-service-catalog-svcat
Red Hat:openshift:3.11::el7
 before 1:3.11.219-1.git.1.717017c.el7
1:3.11.219-1.git.1.717017c.el7
atomic-openshift
Red Hat:openshift:3.11::el7
 before 0:3.11.219-1.git.0.0c21387.el7
0:3.11.219-1.git.0.0c21387.el7
atomic-openshift-clients
Red Hat:openshift:3.11::el7
 before 0:3.11.219-1.git.0.0c21387.el7
0:3.11.219-1.git.0.0c21387.el7
atomic-openshift-clients-redistributable
Red Hat:openshift:3.11::el7
 before 0:3.11.219-1.git.0.0c21387.el7
0:3.11.219-1.git.0.0c21387.el7
atomic-openshift-cluster-autoscaler
Red Hat:openshift:3.11::el7
 before 0:3.11.219-1.git.1.1ad3e34.el7
0:3.11.219-1.git.1.1ad3e34.el7
atomic-openshift-descheduler
Red Hat:openshift:3.11::el7
 before 0:3.11.219-1.git.1.7e5b9ee.el7
0:3.11.219-1.git.1.7e5b9ee.el7
atomic-openshift-docker-excluder
Red Hat:openshift:3.11::el7
 before 0:3.11.219-1.git.0.0c21387.el7
0:3.11.219-1.git.0.0c21387.el7
atomic-openshift-dockerregistry
Red Hat:openshift:3.11::el7
 before 0:3.11.219-1.git.1.8323991.el7
0:3.11.219-1.git.1.8323991.el7
atomic-openshift-excluder
Red Hat:openshift:3.11::el7
 before 0:3.11.219-1.git.0.0c21387.el7
0:3.11.219-1.git.0.0c21387.el7
atomic-openshift-hyperkube
Red Hat:openshift:3.11::el7
 before 0:3.11.219-1.git.0.0c21387.el7
0:3.11.219-1.git.0.0c21387.el7
atomic-openshift-hypershift
Red Hat:openshift:3.11::el7
 before 0:3.11.219-1.git.0.0c21387.el7
0:3.11.219-1.git.0.0c21387.el7
atomic-openshift-master
Red Hat:openshift:3.11::el7
 before 0:3.11.219-1.git.0.0c21387.el7
0:3.11.219-1.git.0.0c21387.el7
atomic-openshift-metrics-server
Red Hat:openshift:3.11::el7
 before 0:3.11.219-1.git.1.6fe54fb.el7
0:3.11.219-1.git.1.6fe54fb.el7
atomic-openshift-node
Red Hat:openshift:3.11::el7
 before 0:3.11.219-1.git.0.0c21387.el7
0:3.11.219-1.git.0.0c21387.el7
atomic-openshift-node-problem-detector
Red Hat:openshift:3.11::el7
 before 0:3.11.219-1.git.1.5ae8753.el7
0:3.11.219-1.git.1.5ae8753.el7
atomic-openshift-pod
Red Hat:openshift:3.11::el7
 before 0:3.11.219-1.git.0.0c21387.el7
0:3.11.219-1.git.0.0c21387.el7
atomic-openshift-sdn-ovs
Red Hat:openshift:3.11::el7
 before 0:3.11.219-1.git.0.0c21387.el7
0:3.11.219-1.git.0.0c21387.el7
atomic-openshift-service-idler
Red Hat:openshift:3.11::el7
 before 0:3.11.219-1.git.1.958cdae.el7
0:3.11.219-1.git.1.958cdae.el7
atomic-openshift-template-service-broker
Red Hat:openshift:3.11::el7
 before 0:3.11.219-1.git.0.0c21387.el7
0:3.11.219-1.git.0.0c21387.el7
atomic-openshift-tests
Red Hat:openshift:3.11::el7
 before 0:3.11.219-1.git.0.0c21387.el7
0:3.11.219-1.git.0.0c21387.el7
golang-github-openshift-oauth-proxy
Red Hat:openshift:3.11::el7
 before 0:3.11.219-1.git.1.076ae14.el7
0:3.11.219-1.git.1.076ae14.el7
golang-github-prometheus-alertmanager
Red Hat:openshift:3.11::el7
 before 0:3.11.219-1.git.1.9a593f8.el7
0:3.11.219-1.git.1.9a593f8.el7
golang-github-prometheus-node_exporter
Red Hat:openshift:3.11::el7
 before 0:3.11.219-1.git.1.7fa9674.el7
0:3.11.219-1.git.1.7fa9674.el7
golang-github-prometheus-prometheus
Red Hat:openshift:3.11::el7
 before 0:3.11.219-1.git.1.3f6e657.el7
0:3.11.219-1.git.1.3f6e657.el7
openshift-ansible
Red Hat:openshift:3.11::el7
 before 0:3.11.219-1.git.0.8845382.el7
0:3.11.219-1.git.0.8845382.el7
openshift-ansible-docs
Red Hat:openshift:3.11::el7
 before 0:3.11.219-1.git.0.8845382.el7
0:3.11.219-1.git.0.8845382.el7
openshift-ansible-playbooks
Red Hat:openshift:3.11::el7
 before 0:3.11.219-1.git.0.8845382.el7
0:3.11.219-1.git.0.8845382.el7
openshift-ansible-roles
Red Hat:openshift:3.11::el7
 before 0:3.11.219-1.git.0.8845382.el7
0:3.11.219-1.git.0.8845382.el7
openshift-ansible-test
Red Hat:openshift:3.11::el7
 before 0:3.11.219-1.git.0.8845382.el7
0:3.11.219-1.git.0.8845382.el7
openshift-enterprise-autoheal
Red Hat:openshift:3.11::el7
 before 0:3.11.219-1.git.1.c544df9.el7
0:3.11.219-1.git.1.c544df9.el7
openshift-enterprise-cluster-capacity
Red Hat:openshift:3.11::el7
 before 0:3.11.219-1.git.1.ca1ee51.el7
0:3.11.219-1.git.1.ca1ee51.el7
openshift-kuryr
Red Hat:openshift:3.11::el7
 before 0:3.11.219-1.git.1.717d59f.el7
0:3.11.219-1.git.1.717d59f.el7
openshift-kuryr-cni
Red Hat:openshift:3.11::el7
 before 0:3.11.219-1.git.1.717d59f.el7
0:3.11.219-1.git.1.717d59f.el7
openshift-kuryr-common
Red Hat:openshift:3.11::el7
 before 0:3.11.219-1.git.1.717d59f.el7
0:3.11.219-1.git.1.717d59f.el7
openshift-kuryr-controller
Red Hat:openshift:3.11::el7
 before 0:3.11.219-1.git.1.717d59f.el7
0:3.11.219-1.git.1.717d59f.el7
prometheus
Red Hat:openshift:3.11::el7
 before 0:3.11.219-1.git.1.3f6e657.el7
0:3.11.219-1.git.1.3f6e657.el7
prometheus-alertmanager
Red Hat:openshift:3.11::el7
 before 0:3.11.219-1.git.1.9a593f8.el7
0:3.11.219-1.git.1.9a593f8.el7
prometheus-node-exporter
Red Hat:openshift:3.11::el7
 before 0:3.11.219-1.git.1.7fa9674.el7
0:3.11.219-1.git.1.7fa9674.el7
python2-kuryr-kubernetes
Red Hat:openshift:3.11::el7
 before 0:3.11.219-1.git.1.717d59f.el7
0:3.11.219-1.git.1.717d59f.el7
openshift
Red Hat:openshift:4.2::el7
 before 0:4.2.29-202004120346.git.0.d948116.el7
0:4.2.29-202004120346.git.0.d948116.el7
openshift-hyperkube
Red Hat:openshift:4.2::el7
 before 0:4.2.29-202004120346.git.0.d948116.el7
0:4.2.29-202004120346.git.0.d948116.el7
openshift
Red Hat:openshift:4.2::el8
 before 0:4.2.29-202004110432.git.0.f7d02c8.el8
0:4.2.29-202004110432.git.0.f7d02c8.el8
openshift-hyperkube
Red Hat:openshift:4.2::el8
 before 0:4.2.29-202004110432.git.0.f7d02c8.el8
0:4.2.29-202004110432.git.0.f7d02c8.el8
cri-o
Red Hat:openshift:3.11::el7
From an advisory covering 6 CVEs
 before 0:1.11.16-0.10.dev.rhaos3.11.git1eee681.el7
0:1.11.16-0.10.dev.rhaos3.11.git1eee681.el7
cri-o-debuginfo
Red Hat:openshift:3.11::el7
From an advisory covering 6 CVEs
 before 0:1.11.16-0.10.dev.rhaos3.11.git1eee681.el7
0:1.11.16-0.10.dev.rhaos3.11.git1eee681.el7
atomic-openshift-web-console
Red Hat:openshift:3.11::el7
From an advisory covering 6 CVEs
 before 0:3.11.248-1.git.1.cc96c2d.el7
0:3.11.248-1.git.1.cc96c2d.el7
atomic-openshift
Red Hat:openshift:3.11::el7
From an advisory covering 6 CVEs
 before 0:3.11.248-1.git.0.92ee8ac.el7
0:3.11.248-1.git.0.92ee8ac.el7
atomic-openshift-clients
Red Hat:openshift:3.11::el7
From an advisory covering 6 CVEs
 before 0:3.11.248-1.git.0.92ee8ac.el7
0:3.11.248-1.git.0.92ee8ac.el7
atomic-openshift-clients-redistributable
Red Hat:openshift:3.11::el7
From an advisory covering 6 CVEs
 before 0:3.11.248-1.git.0.92ee8ac.el7
0:3.11.248-1.git.0.92ee8ac.el7
atomic-openshift-docker-excluder
Red Hat:openshift:3.11::el7
From an advisory covering 6 CVEs
 before 0:3.11.248-1.git.0.92ee8ac.el7
0:3.11.248-1.git.0.92ee8ac.el7
atomic-openshift-excluder
Red Hat:openshift:3.11::el7
From an advisory covering 6 CVEs
 before 0:3.11.248-1.git.0.92ee8ac.el7
0:3.11.248-1.git.0.92ee8ac.el7
atomic-openshift-hyperkube
Red Hat:openshift:3.11::el7
From an advisory covering 6 CVEs
 before 0:3.11.248-1.git.0.92ee8ac.el7
0:3.11.248-1.git.0.92ee8ac.el7
atomic-openshift-hypershift
Red Hat:openshift:3.11::el7
From an advisory covering 6 CVEs
 before 0:3.11.248-1.git.0.92ee8ac.el7
0:3.11.248-1.git.0.92ee8ac.el7
atomic-openshift-master
Red Hat:openshift:3.11::el7
From an advisory covering 6 CVEs
 before 0:3.11.248-1.git.0.92ee8ac.el7
0:3.11.248-1.git.0.92ee8ac.el7
atomic-openshift-node
Red Hat:openshift:3.11::el7
From an advisory covering 6 CVEs
 before 0:3.11.248-1.git.0.92ee8ac.el7
0:3.11.248-1.git.0.92ee8ac.el7
atomic-openshift-pod
Red Hat:openshift:3.11::el7
From an advisory covering 6 CVEs
 before 0:3.11.248-1.git.0.92ee8ac.el7
0:3.11.248-1.git.0.92ee8ac.el7
atomic-openshift-sdn-ovs
Red Hat:openshift:3.11::el7
From an advisory covering 6 CVEs
 before 0:3.11.248-1.git.0.92ee8ac.el7
0:3.11.248-1.git.0.92ee8ac.el7
atomic-openshift-template-service-broker
Red Hat:openshift:3.11::el7
From an advisory covering 6 CVEs
 before 0:3.11.248-1.git.0.92ee8ac.el7
0:3.11.248-1.git.0.92ee8ac.el7
atomic-openshift-tests
Red Hat:openshift:3.11::el7
From an advisory covering 6 CVEs
 before 0:3.11.248-1.git.0.92ee8ac.el7
0:3.11.248-1.git.0.92ee8ac.el7

History

History
RecordedChangedSources
affected, facts
affected
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2020-8552 is a medium vulnerability (CVSS 5.3) in Kubernetes, published March 27, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.84%, the 86th percentile. Fixed in k8s.io/apiserver 0.15.10.

References

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