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/datadoghq/private-action-runner:v1.21.05f5918f843a4
stdlib@go1.25.8
1.26.9
1
gcr.io/etcd-development/etcd:v3.7.27c6c239825d0
stdlib@go1.26.8
1.26.9
1
gcr.io/etcd-development/etcd:v3.5.98c956d9b0d39
stdlib@go1.19.9
1.26.9
1
gcr.io/gke-release/custom-metrics-stackdriver-adapter:v0.13.1-gke.06937c0a9b203
stdlib@go1.19.3
1.26.9
1
gcr.io/gloo-mesh/gloo-mesh:1.1.2a4011eae6a0b
stdlib@go1.16.3
1.26.9
1
gcr.io/google.com/cloudsdktool/google-cloud-cli:alpine7002c0b3cec5
stdlib@go1.26.6
1.26.9
1
gcr.io/istio-release/pilot:1.11.1c552478f8f11
stdlib@go1.16.7
1.26.9
1
gcr.io/istio-release/proxyv2:1.11.19538fabe49fd
stdlib@go1.16.7
1.26.9
1
gcr.io/istio-testing/install-cni:latestec6f9ea5757b
stdlib@go1.27.0
1.26.9
1
gcr.io/istio-testing/operator:latest8d4576f7b98f
stdlib@go1.22.5
1.26.9
1
gcr.io/k8s-staging-multitenancy/hnc-manager:v1.1.08ab8229f6a89
stdlib@go1.20.5
1.26.9
1
gcr.io/k8s-staging-sig-storage/objectstorage-controller:v20221027-v0.1.1-8-g300019fa84b574e8027
stdlib@go1.18.3
1.26.9
1
gcr.io/kaniko-project/executor:latest4e7a52dd1f14
stdlib@go1.24.3
1.26.9
1
gcr.io/kasten-images/aggregatedapis:9.0.79a189cf0aff8
stdlib@go1.27.1
1.26.9
1
gcr.io/kasten-images/auth:9.0.716efe4c210e0
stdlib@go1.27.1
1.26.9
1
gcr.io/kasten-images/bloblifecyclemanager:9.0.783f7c06dc4d1
stdlib@go1.27.1
1.26.9
1
gcr.io/kasten-images/catalog:9.0.70ea3df63f5b6
stdlib@go1.27.1
1.26.9
1
gcr.io/kasten-images/configmap-reload:9.0.7b9b8a1b65f7a
stdlib@go1.27.1
1.26.9
1
gcr.io/kasten-images/controllermanager:9.0.7a01f872d8e0c
stdlib@go1.27.1
1.26.9
1
gcr.io/kasten-images/crypto:9.0.76c6b6d9af1d4
stdlib@go1.27.1
1.26.9
1
gcr.io/kasten-images/dashboardbff:9.0.71a8b1ccfc402
stdlib@go1.27.1
1.26.9
1
gcr.io/kasten-images/events:9.0.7e7beb79514f9
stdlib@go1.27.1
1.26.9
1
gcr.io/kasten-images/executor:9.0.74fe7419cecd9
stdlib@go1.27.1
1.26.9
1
gcr.io/kasten-images/garbagecollector:9.0.74dfd4a2dae57
stdlib@go1.27.1
1.26.9
1
gcr.io/kasten-images/gateway:9.0.76f14d4acd0c5
stdlib@go1.27.1
1.26.9
1
gcr.io/kasten-images/jobs:9.0.7a093d080604f
stdlib@go1.27.1
1.26.9
1
gcr.io/kasten-images/kanister:9.0.703d05d517803
stdlib@go1.27.1
1.26.9
1
gcr.io/kasten-images/kanister-tools:9.0.79778af80396e
stdlib@go1.27.1
1.26.9
1
gcr.io/kasten-images/logging:9.0.7e41747f4a3c3
stdlib@go1.27.1
1.26.9
1
gcr.io/kasten-images/metering:9.0.7209e1aaee219
stdlib@go1.27.1
1.26.9
1
gcr.io/kasten-images/prometheus:9.0.793bdb766db72
stdlib@go1.27.1
1.26.9
1
gcr.io/kasten-images/repositories:9.0.75c5435aea185
stdlib@go1.27.1
1.26.9
1
gcr.io/kasten-images/restorectl:8.0.145a0884f9a90c
stdlib@go1.25.4
1.26.9
1
gcr.io/kasten-images/state:9.0.7c4bfd7feb74a
stdlib@go1.27.1
1.26.9
1
gcr.io/kasten-images/upgrade:9.0.7b2447f8bc553
stdlib@go1.27.1
1.26.9
1
gcr.io/kasten-images/vbrintegrationapi:9.0.785e432303eff
stdlib@go1.27.1
1.26.9
1
gcr.io/knative-releases/knative.dev/eventing/cmd/broker/filterd675f211a40f
stdlib@go1.22.8
1.26.9
1
gcr.io/knative-releases/knative.dev/eventing/cmd/broker/ingressec4b544499ba
stdlib@go1.22.8
1.26.9
1
gcr.io/knative-releases/knative.dev/eventing/cmd/mtchannel_broker395f4ff1bd34
stdlib@go1.22.8
1.26.9
1
gcr.io/knative-releases/knative.dev/net-certmanager/cmd/webhook873b968f02b5
stdlib@go1.14.2
1.26.9
1
gcr.io/knative-releases/knative.dev/net-istio/cmd/controller:v1.13.1a5b041ba3c9e
stdlib@go1.21.5
1.26.9
1
gcr.io/knative-releases/knative.dev/net-istio/cmd/controllere70bc675f977
stdlib@go1.22.8
1.26.9
1
gcr.io/knative-releases/knative.dev/net-istio/cmd/controller:v1.2.0f253b82941c2
stdlib@go1.17.6
1.26.9
1
gcr.io/knative-releases/knative.dev/net-istio/cmd/webhook7d76a6d42d13
stdlib@go1.22.8
1.26.9
1
gcr.io/knative-releases/knative.dev/net-istio/cmd/webhook:v1.2.0a705c1ea8e9e
stdlib@go1.17.6
1.26.9
1
gcr.io/knative-releases/knative.dev/net-istio/cmd/webhook:v1.13.1f066376eee17
stdlib@go1.21.5
1.26.9
1
gcr.io/knative-releases/knative.dev/net-kourier/cmd/kourier15a601147ef4
stdlib@go1.24.2
1.26.9
1
gcr.io/knative-releases/knative.dev/net-kourier/cmd/kourier197fbb71d1f1
stdlib@go1.18.3
1.26.9
1
gcr.io/knative-releases/knative.dev/operator/cmd/operator:v1.22.3733f21dc06f9
stdlib@go1.26.4
1.26.9
1
gcr.io/knative-releases/knative.dev/operator/cmd/webhook:v1.22.366ae76179a80
stdlib@go1.26.4
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.