StackRadar

CVE-2026-56866

High

Advisory

Published 8 Oct 2026In the index since 9 Oct 2026
Severity
High
worst across findings
CVSS
7.5
base score, highest
EPSS
0.003
22nd percentile
CISA KEV
Not listed
no confirmed exploitation
Charts affected
5,220
of 18,137 indexed, latest versions
Container images
6,032
deployed by those charts
Fix available
1 of 2
affected packages

HTTP/1 client connection desynchronization after CONNECT rejection in net/http

Carried by container images the latest versions of 5,220 of 18,137 indexed charts deploy, on 6,032 images.

Affected packageAffected versionsFixed inImages
stdlibgolanggo1.13, go1.13.1, go1.13.3, go1.13.4+208 more1.26.96,032
golang-1.19deb1.19.8-2no fix listed1
OSV records
DEBIAN-CVE-2026-56866GO-2026-6605
Trending
Rank 10 in indexed charts, since 9 Oct 2026. See the ranking →

Charts affected

5,220 by stars
ChartLatestAffected imagesRadar Score
mdbygqygq2Verified publisher5.0.71 of 1See more

mdb ygqygq2 5.0.7

1 of the 1 container images this version deploys carry CVE-2026-56866.

Container imageDigestPackageFixed in
bitnami/nginx:latestb8d42f076789
stdlib@go1.26.8
1.26.9

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170
mod-chartygqygq2Verified publisher5.1.01 of 1See more

mod-chart ygqygq2 5.1.0

1 of the 1 container images this version deploys carry CVE-2026-56866.

Container imageDigestPackageFixed in
bitnami/nginx:latestb8d42f076789
stdlib@go1.26.8
1.26.9

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170
prometheusalertygqygq2Verified publisher1.0.01 of 1See more

prometheusalert ygqygq2 1.0.0

1 of the 1 container images this version deploys carry CVE-2026-56866.

Container imageDigestPackageFixed in
feiyu563/prometheus-alert:v4.9.1224cfa68cbd9
stdlib@go1.20.6
1.26.9

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2,365
utcookygqygq2Verified publisher2.1.41 of 1See more

utcook ygqygq2 2.1.4

1 of the 1 container images this version deploys carry CVE-2026-56866.

Container imageDigestPackageFixed in
bitnami/nginx:latestb8d42f076789
stdlib@go1.26.8
1.26.9

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170
matrixdb-operatorymatrixOfficialVerified publisher0.13.01 of 2See more

matrixdb-operator ymatrix 0.13.0

1 of the 2 container images this version deploys carry CVE-2026-56866.

Container imageDigestPackageFixed in
matrixdb/kubebuilder_kube-rbac-proxy:v0.12.0ed3c7e6291e8
stdlib@go1.18.1
1.26.9

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2,983
rawfile-csiymatrixVerified publisher0.2.14 of 4See more

rawfile-csi ymatrix 0.2.1

4 of the 4 container images this version deploys carry CVE-2026-56866.

Container imageDigestPackageFixed in
matrixdb/custom-external-provisioner:4622a07d7-202204247e9ffe249a51
stdlib@go1.17.8
1.26.9
matrixdb/rawfile-csi:v0.2.195b2e38e913d
stdlib@go1.17.9
1.26.9
matrixdb/sig-storage_csi-node-driver-registrar:v2.2.0ba763bb01ddc
stdlib@go1.16
1.26.9
matrixdb/sig-storage_livenessprobe:v2.3.07ab06fe3d8a7
stdlib@go1.16
1.26.9

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12,453
nginx-vts-exporterymrs0.1.21 of 1See more

nginx-vts-exporter ymrs 0.1.2

1 of the 1 container images this version deploys carry CVE-2026-56866.

Container imageDigestPackageFixed in
sophos/nginx-vts-exporter:latestf1073556b29b
stdlib@go1.13.6
1.26.9

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2,469
version-checkerymrs0.2.31 of 1See more

version-checker ymrs 0.2.3

1 of the 1 container images this version deploys carry CVE-2026-56866.

Container imageDigestPackageFixed in
quay.io/jetstack/version-checker:v0.2.15f6f8ba0b671
stdlib@go1.15.2
1.26.9

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4,257
prometheus-monitoring-stackyotron-helm-charts1.2.03 of 3See more

prometheus-monitoring-stack yotron-helm-charts 1.2.0

3 of the 3 container images this version deploys carry CVE-2026-56866.

Container imageDigestPackageFixed in
grafana/grafana:latestb28bae15e219
stdlib@go1.26.7
1.26.9
quay.io/prometheus/alertmanager:lateste9733bafb1bd
stdlib@go1.26.8
1.26.9
quay.io/prometheus/prometheus:latestefd719c99d83
stdlib@go1.27.1
1.26.9

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863
ical-filter-proxyyungwoodVerified publisher0.3.11 of 1See more

ical-filter-proxy yungwood 0.3.1

1 of the 1 container images this version deploys carry CVE-2026-56866.

Container imageDigestPackageFixed in
yungwood/ical-filter-proxy:0.3.1ddc3f30ab05f
stdlib@go1.26.5
1.26.9

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259
synergy-wholesale-exporteryungwoodVerified publisher0.1.11 of 1See more

synergy-wholesale-exporter yungwood 0.1.1

1 of the 1 container images this version deploys carry CVE-2026-56866.

Container imageDigestPackageFixed in
yungwood/synergy-wholesale-exporter:0.1.1054dce85989b
stdlib@go1.26.5
1.26.9

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259
zahori-consulzahoriVerified publisher1.0.12 of 2See more

zahori-consul zahori 1.0.1

2 of the 2 container images this version deploys carry CVE-2026-56866.

Container imageDigestPackageFixed in
hashicorp/consul:1.15.3ddff34041c5c
stdlib@go1.20.4
1.26.9
hashicorp/consul-k8s-control-plane:1.1.262bed1bf8106
stdlib@go1.20.4
1.26.9

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6,689
zahori-moonzahoriVerified publisher1.0.13 of 3See more

zahori-moon zahori 1.0.1

3 of the 3 container images this version deploys carry CVE-2026-56866.

Container imageDigestPackageFixed in
quay.io/aerokube/moon:2.5.1a8837b00ba1c
stdlib@go1.20.4
1.26.9
quay.io/aerokube/moon-conf:2.5.19ca307b30080
stdlib@go1.20.4
1.26.9
quay.io/aerokube/moon-ui:2.0.589990b146824
stdlib@go1.20.5
1.26.9

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5,024
zahori-schedulerzahoriVerified publisher1.0.11 of 1See more

zahori-scheduler zahori 1.0.1

1 of the 1 container images this version deploys carry CVE-2026-56866.

Container imageDigestPackageFixed in
zahoriaut/zahori-scheduler:1.0.047d0979b1184
stdlib@go1.20.5
1.26.9

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3,118
jenkinszanise-jenkins-helm-chart0.1.01 of 1See more

jenkins zanise-jenkins-helm-chart 0.1.0

1 of the 1 container images this version deploys carry CVE-2026-56866.

Container imageDigestPackageFixed in
jenkins/jenkins:ltsa660310e39ad
stdlib@go1.27.0
1.26.9

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2,194
posthogzeet0.23.22 of 9See more

posthog zeet 0.23.2

2 of the 9 container images this version deploys carry CVE-2026-56866.

Container imageDigestPackageFixed in
altinity/clickhouse-operator:0.19.07a85f522c5bc
stdlib@go1.17.13
1.26.9
altinity/metrics-exporter:latesta5206c713de7
stdlib@go1.26.8
1.26.9

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4,829
endlessh-gozekker6Verified publisher0.4.01 of 1See more

endlessh-go zekker6 0.4.0

1 of the 1 container images this version deploys carry CVE-2026-56866.

Container imageDigestPackageFixed in
ghcr.io/shizunge/endlessh-go:2026.0730.08826dad32623
stdlib@go1.26.5
1.26.9

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827
karmazekker6Verified publisher0.22.01 of 1See more

karma zekker6 0.22.0

1 of the 1 container images this version deploys carry CVE-2026-56866.

Container imageDigestPackageFixed in
lmierzwa/karma:v0.133f5d0a0ff4062
stdlib@go1.27.1
1.26.9

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148
zookeeper-exporterzookeeper-exporter0.1.01 of 1See more

zookeeper-exporter zookeeper-exporter 0.1.0

1 of the 1 container images this version deploys carry CVE-2026-56866.

Container imageDigestPackageFixed in
dabealu/zookeeper-exporter:latest86106fec315f
stdlib@go1.14.15
1.26.9

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2,294
zoo-project-druzoo-projectOfficialVerified publisher0.10.92 of 6See more

zoo-project-dru zoo-project 0.10.9

2 of the 6 container images this version deploys carry CVE-2026-56866.

Container imageDigestPackageFixed in
library/postgres:18.6-alpine3.2477f585114c32
stdlib@go1.24.6
1.26.9
zooproject/zoo-project:dru-51e7d55383f24594959b69e58518961c6aa66740da112e8d03f1
stdlib@go1.26.8
1.26.9

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7,302

Container images carrying it

6,032 by charts deploying them

A fixed version is listed for 1 of the 2 affected packages.

Container imageDigestPackageFixed inUsed by
gcr.io/knative-releases/knative.dev/operator/cmd/webhook6c5c90cdf707
stdlib@go1.19.5
1.26.9
1
gcr.io/knative-releases/knative.dev/serving/cmd/activator08315309da4b
stdlib@go1.18.3
1.26.9
1
gcr.io/knative-releases/knative.dev/serving/cmd/activator1e3db4f2eeed
stdlib@go1.14.10
1.26.9
1
gcr.io/knative-releases/knative.dev/serving/cmd/activator:v1.13.121f8e11a44bf
stdlib@go1.21.5
1.26.9
1
gcr.io/knative-releases/knative.dev/serving/cmd/activator:v1.2.593ff6e693577
stdlib@go1.17.8
1.26.9
1
gcr.io/knative-releases/knative.dev/serving/cmd/activatora5de0fb75046
stdlib@go1.14.2
1.26.9
1
gcr.io/knative-releases/knative.dev/serving/cmd/activator:v1.10.2c2994c2b6c2c
stdlib@go1.20.4
1.26.9
1
gcr.io/knative-releases/knative.dev/serving/cmd/autoscaler:v1.2.5007820fdb75b
stdlib@go1.17.8
1.26.9
1
gcr.io/knative-releases/knative.dev/serving/cmd/autoscaler105bdd14ecaa
stdlib@go1.18.3
1.26.9
1
gcr.io/knative-releases/knative.dev/serving/cmd/autoscaler2ef460356b17
stdlib@go1.14.2
1.26.9
1
gcr.io/knative-releases/knative.dev/serving/cmd/autoscaler:v1.13.134796e9f760b
stdlib@go1.21.5
1.26.9
1
gcr.io/knative-releases/knative.dev/serving/cmd/autoscaler:v1.10.28319aa662b49
stdlib@go1.20.4
1.26.9
1
gcr.io/knative-releases/knative.dev/serving/cmd/autoscalerdb6ceff2aab4
stdlib@go1.14.10
1.26.9
1
gcr.io/knative-releases/knative.dev/serving/cmd/autoscaler-hpa:v1.10.2eb612b929eaa
stdlib@go1.20.4
1.26.9
1
gcr.io/knative-releases/knative.dev/serving/cmd/controller30ce73388ae5
stdlib@go1.14.2
1.26.9
1
gcr.io/knative-releases/knative.dev/serving/cmd/controller:v1.13.153d9aa4d2c7a
stdlib@go1.21.5
1.26.9
1
gcr.io/knative-releases/knative.dev/serving/cmd/controller:v1.2.575cfdcfa050a
stdlib@go1.17.8
1.26.9
1
gcr.io/knative-releases/knative.dev/serving/cmd/controller:v1.10.298a2cc7fd62e
stdlib@go1.20.4
1.26.9
1
gcr.io/knative-releases/knative.dev/serving/cmd/controllerb2cd45b8a8a4
stdlib@go1.14.10
1.26.9
1
gcr.io/knative-releases/knative.dev/serving/cmd/controllerbac158dfb0c7
stdlib@go1.18.3
1.26.9
1
gcr.io/knative-releases/knative.dev/serving/cmd/default-domain5e0429b70299
stdlib@go1.19.5
1.26.9
1
gcr.io/knative-releases/knative.dev/serving/cmd/domain-mapping:v1.2.523baa1932232
stdlib@go1.17.8
1.26.9
1
gcr.io/knative-releases/knative.dev/serving/cmd/domain-mappinge384a295069b
stdlib@go1.18.3
1.26.9
1
gcr.io/knative-releases/knative.dev/serving/cmd/domain-mapping:v1.10.2f66c41ad7a73
stdlib@go1.20.4
1.26.9
1
gcr.io/knative-releases/knative.dev/serving/cmd/domain-mapping-webhook15f1ce7f35b4
stdlib@go1.18.3
1.26.9
1
gcr.io/knative-releases/knative.dev/serving/cmd/domain-mapping-webhook:v1.10.27368aaddf2be
stdlib@go1.20.4
1.26.9
1
gcr.io/knative-releases/knative.dev/serving/cmd/domain-mapping-webhook:v1.2.5847bb97e3844
stdlib@go1.17.8
1.26.9
1
gcr.io/knative-releases/knative.dev/serving/cmd/webhook1282a399cbb9
stdlib@go1.18.3
1.26.9
1
gcr.io/knative-releases/knative.dev/serving/cmd/webhook:v1.10.24305209ce498
stdlib@go1.20.4
1.26.9
1
gcr.io/knative-releases/knative.dev/serving/cmd/webhook:v1.13.1700c69915dc7
stdlib@go1.21.5
1.26.9
1
gcr.io/knative-releases/knative.dev/serving/cmd/webhook:v1.2.59084ea8498ea
stdlib@go1.17.8
1.26.9
1
gcr.io/knative-releases/knative.dev/serving/cmd/webhookd27b4495ccc3
stdlib@go1.14.10
1.26.9
1
gcr.io/knative-releases/knative.dev/serving/cmd/webhookf16c0e022203
stdlib@go1.14.2
1.26.9
1
gcr.io/kubecost1/cost-model:prod-2.5.502b90651367f
stdlib@go1.23.3
1.26.9
1
gcr.io/kubecost1/cost-model:prod-1.81.067f4f162da8d
stdlib@go1.16.4
1.26.9
1
gcr.io/kubecost1/cost-model:prod-1.108.1852f7923fad3
stdlib@go1.21.5
1.26.9
1
gcr.io/kubecost1/cost-model:prod-1.82.2989a60847416
stdlib@go1.16.5
1.26.9
1
gcr.io/kubecost1/cost-model:prod-2.6.39e507ac0aebb
stdlib@go1.23.4
1.26.9
1
gcr.io/kubecost1/server:prod-1.82.22b1a3d08caac
stdlib@go1.16.5
1.26.9
1
gcr.io/kubecost1/server:prod-1.81.0a348db3e4d74
stdlib@go1.16.4
1.26.9
1
gcr.io/ml-pipeline/api-server:2.3.039661bd823e8
stdlib@go1.21.7
1.26.9
1
gcr.io/ml-pipeline/api-server:2.0.0-alpha.5dc6ca05bb94f
stdlib@go1.17.6
1.26.9
1
gcr.io/ml-pipeline/cache-server:2.3.0293941ee4f65
stdlib@go1.21.7
1.26.9
1
gcr.io/ml-pipeline/cache-server:2.0.0-alpha.583e79c709df3
stdlib@go1.17.6
1.26.9
1
gcr.io/ml-pipeline/mysql:5.7-debiandf28187b5455
stdlib@go1.16.7
1.26.9
1
gcr.io/ml-pipeline/persistenceagent:2.0.0-alpha.500db9796a37b
stdlib@go1.17.6
1.26.9
1
gcr.io/ml-pipeline/persistenceagent:2.3.0109ac1b38c41
stdlib@go1.21.7
1.26.9
1
gcr.io/ml-pipeline/scheduledworkflow:2.0.0-alpha.5795a0c8a0e13
stdlib@go1.17.6
1.26.9
1
gcr.io/ml-pipeline/scheduledworkflow:2.3.0f7e67e0bc071
stdlib@go1.21.7
1.26.9
1
gcr.io/ml-pipeline/viewer-crd-controller:2.0.0-alpha.534403f9f94be
stdlib@go1.17.6
1.26.9
1

syft 1.42.1 · advisories as of 15 Oct 2026

Corrections: contact@stackradar.io

Catalogue: Artifact Hub · Advisories: OSV · Exploitation: FIRST EPSS, CISA KEV.