CVE-2019-11254
Kubernetes API Server denial of service vulnerability from malicious YAML payloads
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
6.5
Kubernetes API Server denial of service vulnerability from malicious YAML payloads
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.
- Record
CVE-2019-11254- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-1050
- Updated
- 2026-11-02
EUVDEUVD-2021-2608
6.5
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.
- Record
EUVD-2021-2608- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-wxc4-f4m6-wwqv
6.5
Excessive Platform Resource Consumption within a Loop in Kubernetes
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.
- Record
GHSA-wxc4-f4m6-wwqv- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-1050
- Updated
- 2026-11-02
NVD
6.5
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.
- Record
CVE-2019-11254- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - CVSS 2.0
- 4.0 Medium
AV:N/AC:L/Au:S/C:N/I:N/A:P - Weakness
- CWE-1050
- Updated
- 2026-11-02
OSVAZL-41568
6.5
CVE-2019-11254 affecting package packer 1.9.5-23
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.
- Record
AZL-41568- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVAZL-44445
6.5
CVE-2019-11254 affecting package podman for versions less than 5.6.1-2
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.
- Record
AZL-44445- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
Show 11 moreShow less
OSVAZL-44808
6.5
CVE-2019-11254 affecting package buildah for versions less than 1.41.4-2
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.
- Record
AZL-44808- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVAZL-44904
6.5
CVE-2019-11254 affecting package delve 1.5.0-16
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.
- Record
AZL-44904- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSV
6.5
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.
- Record
CVE-2019-11254- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVDEBIAN-CVE-2019-11254
6.5
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.
- Record
DEBIAN-CVE-2019-11254- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVGHSA-wxc4-f4m6-wwqv
6.5
Excessive Platform Resource Consumption within a Loop in Kubernetes
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.
- Record
GHSA-wxc4-f4m6-wwqv- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-1050
- Updated
- 2026-11-02
OSVRHSA-2020:2413
7.5
Red Hat Security Advisory: OpenShift Container Platform 4.5 package security update
- Record
RHSA-2020:2413- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVRHSA-2020:2479
6.5
Red Hat Security Advisory: OpenShift Container Platform 3.11 atomic-openshift security update
- Record
RHSA-2020:2479- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2019-11254
6.5
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.
- Record
UBUNTU-CVE-2019-11254- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVGO-2020-0036 No score
Excessive resource consumption in YAML parsing in gopkg.in/yaml.v2
Due to unbounded aliasing, a crafted YAML file can cause consumption of significant system resources. If parsing user supplied input, this may be used as a denial of service vector.
- Record
GO-2020-0036- Updated
- 2026-11-02
OSVopenSUSE-SU-2024:11911-1 No score
etcd-3.5.2-1.1 on GA media
These are all security issues fixed in the etcd-3.5.2-1.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2024:11911-1- Updated
- 2026-11-02
OSVopenSUSE-SU-2025:0003-1 No score
Security update for etcd
This update for etcd fixes the following issues:
Update to version 3.5.12:
- Bump golang.org/x/crypto to v0.17+ to address CVE-2023-48795
- test: fix TestHashKVWhenCompacting: ensure all goroutine finished
- print error log when creating peer listener failed
- mvcc: Printing etcd backend database related metrics inside scheduleCompaction function
- dependency: update go version to 1.20.13
- commit bbolt transaction if there is any pending deleting operations
- add tests to test tx delete consistency.
- Don't flock snapshot files
- Backport adding digest for etcd base image.
- Add a unit tests and missing flags in etcd help.
- Add missing flag in etcd help.
- Backport testutils.ExecuteUntil to 3.5 branch
- member replace e2e test
- Check if be is nil to avoid panic when be is overriden with nil by recoverSnapshotBackend on line 517
- Don't redeclare err and snapshot variable, fixing validation of consistent index and closing database on defer
- test: enable gofail in release e2e test.
- [3.5] backport health check e2e tests.
- tests: Extract e2e cluster setup to separate package
-
Update to version 3.5.11:
- etcdserver: add linearizable_read check to readyz.
- etcd: Update go version to 1.20.12
- server: disable redirects in peer communication
- etcdserver: add metric counters for livez/readyz health checks.
- etcdserver: add livez and ready http endpoints for etcd.
- http health check bug fixes
- server: Split metrics and health code
- server: Cover V3 health with tests
- server: Refactor health checks
- server: Run health check tests in subtests
- server: Rename test case expect fields
- server: Use named struct initialization in healthcheck test
- Backport server: Don't follow redirects when checking peer urls.
- Backport embed: Add tracing integration test.
- Backport server: Have tracingExporter own resources it initialises.
- Backport server: Add sampling rate to distributed tracing.
- upgrade github.com/stretchr/testify,google.golang.org/genproto/googleapis/api,google.golang.org/grpc to make it consistent
- CVE-2023-47108: Backport go.opentelemetry.io/[email protected] and go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/[email protected]
- github workflow: run arm64 tests on every push
- etcd: upgrade go version from 1.20.10 to 1.20.11
- bump bbolt to 1.3.8 for etcd 3.5
- 3.5: upgrade gRPC-go to 1.58.3
- Backport corrupt check test fix 'etcd server shouldn't wait for the ready notification infinitely on startup'
- etcdserver: add cluster id check for hashKVHandler
- [release-3.5]: upgrade gRPC-go to v1.52.0
- backport #14125 to release-3.5: Update to grpc-1.47 (and fix the connection-string format)
- Return to default write scheduler since golang.org/x/[email protected] started using round robin
- Bump go to v1.20.10 Part of https://github.com/etcd-io/etcd/issues/16740
- bump golang.org/x/net to 0.17.0 Part of https://github.com/etcd-io/etcd/issues/16740
- etcd: upgrade go version to 1.20.9
- Remove obsolete http 1.0 version.
- fix:Ensure that go version is only defined in one file for release-3.5
- Fix panic in etcd validate secure endpoints
- dependency: bump golang to 1.20.8
- Backport redirect metrics data into file to reduce output.
- test.sh: increase timeout for grpcproxy test
- test: add v3 curl test to cover maintenance hash/hashkv REST API
- api: fix duplicate gateway url issue
- pkg: add a verification on the pagebytes which must be > 0
- tests: Backport deflake for TestWatchDelay
- tests: Backport deflake for TestPageWriterRandom
- Backport adding unit test for socket options.
- Backport export reuse-port and reuse-address
- Fix goword failure in rafthttp/transport.go.
- Backport update to golang 1.20 minor release.
- bump go version to 1.19.12
- Update workflows to use makefile recipes for unit, integration & e2e-release.
- Backport Makefile recipes for common test…
- Record
openSUSE-SU-2025:0003-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
gopkg.in/yaml.v2Go |
before 2.2.8 | 2.2.8 |
github.com/go-yaml/yamlGo |
through 2.1.0 | None known |
packerAzure Linux:3 |
through 1.9.5-23 | None known |
podmanAzure Linux:3 |
before 5.6.1-2 | 5.6.1-2 |
buildahAzure Linux:3 |
before 1.41.4-2 | 1.41.4-2 |
delveAzure Linux:3 |
through 1.5.0-16 | None known |
kubernetesDebian:12 |
before 1.17.4-1 | 1.17.4-1 |
kubernetesDebian:13 |
before 1.17.4-1 | 1.17.4-1 |
kubernetesDebian:14 |
before 1.17.4-1 | 1.17.4-1 |
github.com/go-yaml/yamlGo |
All versions | None known |
Show 21 moreShow less
| Package | Affected | Fixed |
|---|---|---|
openshiftRed Hat:openshift:4.5::el7 |
before 0:4.5.0-202007012112.p0.git.0.582d7fc.el7 | 0:4.5.0-202007012112.p0.git.0.582d7fc.el7 |
openshift-hyperkubeRed Hat:openshift:4.5::el7 |
before 0:4.5.0-202007012112.p0.git.0.582d7fc.el7 | 0:4.5.0-202007012112.p0.git.0.582d7fc.el7 |
openshiftRed Hat:openshift:4.5::el8 |
before 0:4.5.0-202007012112.p0.git.0.582d7fc.el8 | 0:4.5.0-202007012112.p0.git.0.582d7fc.el8 |
openshift-hyperkubeRed Hat:openshift:4.5::el8 |
before 0:4.5.0-202007012112.p0.git.0.582d7fc.el8 | 0:4.5.0-202007012112.p0.git.0.582d7fc.el8 |
machine-config-daemonRed Hat:openshift:4.5::el8 |
before 0:4.5.0-202007012112.p0.git.2527.d12c3da.el8 | 0:4.5.0-202007012112.p0.git.2527.d12c3da.el8 |
atomic-openshiftRed Hat:openshift:3.11::el7 |
before 0:3.11.232-1.git.0.a5bc32f.el7 | 0:3.11.232-1.git.0.a5bc32f.el7 |
atomic-openshift-clientsRed Hat:openshift:3.11::el7 |
before 0:3.11.232-1.git.0.a5bc32f.el7 | 0:3.11.232-1.git.0.a5bc32f.el7 |
atomic-openshift-clients-redistributableRed Hat:openshift:3.11::el7 |
before 0:3.11.232-1.git.0.a5bc32f.el7 | 0:3.11.232-1.git.0.a5bc32f.el7 |
atomic-openshift-docker-excluderRed Hat:openshift:3.11::el7 |
before 0:3.11.232-1.git.0.a5bc32f.el7 | 0:3.11.232-1.git.0.a5bc32f.el7 |
atomic-openshift-excluderRed Hat:openshift:3.11::el7 |
before 0:3.11.232-1.git.0.a5bc32f.el7 | 0:3.11.232-1.git.0.a5bc32f.el7 |
atomic-openshift-hyperkubeRed Hat:openshift:3.11::el7 |
before 0:3.11.232-1.git.0.a5bc32f.el7 | 0:3.11.232-1.git.0.a5bc32f.el7 |
atomic-openshift-hypershiftRed Hat:openshift:3.11::el7 |
before 0:3.11.232-1.git.0.a5bc32f.el7 | 0:3.11.232-1.git.0.a5bc32f.el7 |
atomic-openshift-masterRed Hat:openshift:3.11::el7 |
before 0:3.11.232-1.git.0.a5bc32f.el7 | 0:3.11.232-1.git.0.a5bc32f.el7 |
atomic-openshift-nodeRed Hat:openshift:3.11::el7 |
before 0:3.11.232-1.git.0.a5bc32f.el7 | 0:3.11.232-1.git.0.a5bc32f.el7 |
atomic-openshift-podRed Hat:openshift:3.11::el7 |
before 0:3.11.232-1.git.0.a5bc32f.el7 | 0:3.11.232-1.git.0.a5bc32f.el7 |
atomic-openshift-sdn-ovsRed Hat:openshift:3.11::el7 |
before 0:3.11.232-1.git.0.a5bc32f.el7 | 0:3.11.232-1.git.0.a5bc32f.el7 |
atomic-openshift-template-service-brokerRed Hat:openshift:3.11::el7 |
before 0:3.11.232-1.git.0.a5bc32f.el7 | 0:3.11.232-1.git.0.a5bc32f.el7 |
atomic-openshift-testsRed Hat:openshift:3.11::el7 |
before 0:3.11.232-1.git.0.a5bc32f.el7 | 0:3.11.232-1.git.0.a5bc32f.el7 |
etcdopenSUSE:Tumbleweed |
before 3.5.2-1.1 | 3.5.2-1.1 |
etcdSUSE:Package Hub 15 SP6 |
before 3.5.12-bp156.4.3.1 | 3.5.12-bp156.4.3.1 |
etcdopenSUSE:Leap 15.6 |
before 3.5.12-bp156.4.3.1 | 3.5.12-bp156.4.3.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected | ||
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2019-11254 is a medium vulnerability (CVSS 6.5) in Kubernetes, published April 1, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.16%, the 88th percentile. Fixed in gopkg.in/yaml.v2 2.2.8.
References
github.com/kubernetes/kubernetes/issues/89535
groups.google.com/d/msg/kubernetes-announce/ALL9s73E5ck/4yHe8J-PBAAJ
security.netapp.com/advisory/ntap-20200413-0003
nvd.nist.gov/vuln/detail/CVE-2019-11254
github.com/kubernetes/kubernetes/pull/87467/commits/b86df2bec4f377afc0ca03482ffad2f0a49a83b8
github.com/go-yaml/yaml/commit/53403b58ad1b561927d19068c655246f2db79d48
Show 50 moreShow less
github.com/go-yaml/yaml/pull/555
bugs.chromium.org/p/oss-fuzz/issues/detail?id=18496
pkg.go.dev/vuln/GO-2020-0036
github.com/advisories/GHSA-wxc4-f4m6-wwqv
security-tracker.debian.org/tracker/CVE-2019-11254
access.redhat.com/errata/RHSA-2020:2413
access.redhat.com/security/updates/classification
bugzilla.redhat.com/show_bug.cgi?id=1795838
bugzilla.redhat.com/show_bug.cgi?id=1819486
bugzilla.redhat.com/show_bug.cgi?id=1843358
security.access.redhat.com/data/csaf/v2/advisories/2020/rhsa-2020_2413.json
access.redhat.com/security/cve/CVE-2019-11252
bugzilla.redhat.com/show_bug.cgi?id=1860158
cve.org/CVERecord?id=CVE-2019-11252
nvd.nist.gov/vuln/detail/CVE-2019-11252
access.redhat.com/security/cve/CVE-2019-11254
cve.org/CVERecord?id=CVE-2019-11254
groups.google.com/forum
access.redhat.com/security/cve/CVE-2020-8558
cve.org/CVERecord?id=CVE-2020-8558
nvd.nist.gov/vuln/detail/CVE-2020-8558
groups.google.com/g/kubernetes-security-announce/c/B1VegbBDMTE
access.redhat.com/security/cve/CVE-2020-8945
cve.org/CVERecord?id=CVE-2020-8945
nvd.nist.gov/vuln/detail/CVE-2020-8945
access.redhat.com/security/cve/CVE-2020-9283
bugzilla.redhat.com/show_bug.cgi?id=1804533
cve.org/CVERecord?id=CVE-2020-9283
nvd.nist.gov/vuln/detail/CVE-2020-9283
access.redhat.com/errata/RHSA-2020:2479
bugzilla.redhat.com/show_bug.cgi?id=1706826
bugzilla.redhat.com/show_bug.cgi?id=1821583
security.access.redhat.com/data/csaf/v2/advisories/2020/rhsa-2020_2479.json
access.redhat.com/security/cve/CVE-2017-18367
cve.org/CVERecord?id=CVE-2017-18367
nvd.nist.gov/vuln/detail/CVE-2017-18367
access.redhat.com/security/cve/CVE-2020-8555
cve.org/CVERecord?id=CVE-2020-8555
nvd.nist.gov/vuln/detail/CVE-2020-8555
ubuntu.com/security/CVE-2019-11254
suse.com/security/cve/CVE-2019-11254
lists.opensuse.org/archives/list/[email protected]/thread/PE3D4WEFUCELLDKJUEM2KLPFMME7KTAI
bugzilla.suse.com/1174951
bugzilla.suse.com/1181400
bugzilla.suse.com/1183703
bugzilla.suse.com/1199031
suse.com/security/cve/CVE-2020-15106
suse.com/security/cve/CVE-2021-28235
suse.com/security/cve/CVE-2023-47108
suse.com/security/cve/CVE-2023-48795
Left out here: the rest of 1 source description. The JSON record has them.