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
5,377
of 18,104 indexed, latest versions
Container images
6,223
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 5,377 of 18,104 indexed charts deploy, on 6,223 images.

Affected packageAffected versionsFixed inImages
stdlibgolanggo1.13, go1.13.1, go1.13.3, go1.13.4+212 more1.26.96,223
golang-1.19deb1.19.8-2no fix listed1
OSV records
DEBIAN-CVE-2026-56866GO-2026-6605
Trending
Rank 8 in indexed charts, since 9 Oct 2026. See the ranking →

Charts affected

5,377 by stars
ChartLatestAffected imagesRadar Score
kminionxxl-job-adminVerified publisher0.13.01 of 1See more

kminion xxl-job-admin 0.13.0

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

Container imageDigestPackageFixed in
redpandadata/kminion:v2.3.256da99e8d0d3
stdlib@go1.26.3
1.26.9

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984
nfs-subdir-external-provisionerxxl-job-adminVerified publisher4.0.181 of 1See more

nfs-subdir-external-provisioner xxl-job-admin 4.0.18

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

Container imageDigestPackageFixed in
registry.k8s.io/sig-storage/nfs-subdir-external-provisioner:v4.0.263d5e04551ec
stdlib@go1.15
1.26.9

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3,999
nightingalexxl-job-adminVerified publisher0.2.114 of 6See more

nightingale xxl-job-admin 0.2.11

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

Container imageDigestPackageFixed in
flashcatcloud/categraf:latest42e6ab16472e
stdlib@go1.25.14
1.26.9
flashcatcloud/nightingale:8.0.0-beta.11ea1b0aaabe09
stdlib@go1.23.9
1.26.9
library/mysql:5.74bc6bc963e6d
stdlib@go1.18.2
1.26.9
quay.io/prometheus/prometheus:v2.54.1f6639335d34a
stdlib@go1.22.6
1.26.9

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12,700
redisxxl-job-adminVerified publisher24.1.31 of 1See more

redis xxl-job-admin 24.1.3

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

Container imageDigestPackageFixed in
ghcr.io/dellnoantechnp/bitnami/redis:8.4.029064423c369
stdlib@go1.25.6
1.26.9

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606
pgbounceryasn77-pgbouncer0.0.81 of 1See more

pgbouncer yasn77-pgbouncer 0.0.8

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

Container imageDigestPackageFixed in
ghcr.io/yasn77/pgbouncer:v0.0.6cc8c13550e44
stdlib@go1.18.6
1.26.9

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1,876
ygdrassil-monitoringygdrassilVerified publisher0.4.07 of 10See more

ygdrassil-monitoring ygdrassil 0.4.0

7 of the 10 container images this version deploys carry CVE-2026-56866.

Container imageDigestPackageFixed in
grafana/grafana:11.5.15781759b3d27
stdlib@go1.23.5
1.26.9
prom/alertmanager:v0.28.0d5155cfac40a
stdlib@go1.23.4
1.26.9
quay.io/prometheus-operator/prometheus-config-reloader:v0.79.2193280a33bc1
stdlib@go1.23.4
1.26.9
quay.io/prometheus/node-exporter:v1.8.24032c6d5bfd7
stdlib@go1.22.5
1.26.9
quay.io/prometheus/prometheus:v3.1.06559acbd5d77
stdlib@go1.23.4
1.26.9
quay.io/prometheus/pushgateway:v1.11.099392035ae99
stdlib@go1.23.4
1.26.9
registry.k8s.io/kube-state-metrics/kube-state-metrics:v2.14.037d841299325
stdlib@go1.23.3
1.26.9

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13,796
ceph-exporterygqygq2Verified publisher1.0.01 of 1See more

ceph-exporter ygqygq2 1.0.0

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

Container imageDigestPackageFixed in
digitalocean/ceph_exporter:latest3ba058e9a48d
stdlib@go1.20
1.26.9

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6,803
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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163
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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163
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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2,359
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:latest46acb2546866
stdlib@go1.26.8
1.26.9

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163
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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2,986
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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12,446
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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2,463
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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4,260
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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842
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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252
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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252
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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6,687
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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5,004
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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3,110
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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2,128
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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4,784
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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819
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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141
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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2,287
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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7,133

Container images carrying it

6,223 by charts deploying them

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

Container imageDigestPackageFixed inUsed by
library/mysql:8.07dcddc01f13b
stdlib@go1.24.6
1.26.9
91
bitnami/kubectl:latestf7f9e4f64d9e
stdlib@go1.26.8
1.26.9
37
library/postgres:18:18.6:18.6-trixie:latest74935e722416
stdlib@go1.24.6
1.26.9
37
library/mysql:5.74bc6bc963e6d
stdlib@go1.18.2
1.26.9
36
library/postgres:16.15-alpine:16-alpine721873c34ceb
stdlib@go1.24.6
1.26.9
21
jenkins/jenkins:2.580.1-jdk21:ltsa660310e39ad
stdlib@go1.27.0
1.26.9
19
library/postgres:18:18.6-trixie:latestfc973eb97c9f
stdlib@go1.24.6
1.26.9
19
quay.io/prometheus/prometheus:latest:v3.15.0efd719c99d83
stdlib@go1.27.1
1.26.9
19
library/postgres:18.6-alpine:18.6-alpine3.24:18-alpine:alpine77f585114c32
stdlib@go1.24.6
1.26.9
18
library/mysql:8:8.4:8.4.116ea90827b110
stdlib@go1.24.6
1.26.9
17
registry.k8s.io/kube-state-metrics/kube-state-metrics:v2.20.042cfe3723a5f
stdlib@go1.26.6
1.26.9
15
bitnami/redis:latestf4797b37502e
stdlib@go1.26.8
1.26.9
14
jimmidyson/configmap-reload:v0.5.0904d08e9f701
stdlib@go1.15.7
1.26.9
14
ghcr.io/appscode/kubectl-nonroot:1.340b26892cec94
stdlib@go1.24.13
1.26.9
14
quay.io/prometheus/node-exporter:latest:v1.12.11b4e4438faca
stdlib@go1.26.5
1.26.9
14
codeurjc/toposervice:v1.0:v1.239fb4c11e6a49
stdlib@go1.18.10
1.26.9
13
library/postgres:17-alpineb0f9560a2de0
stdlib@go1.24.6
1.26.9
13
bitnami/mongodb:latestad05bb9a19fa
stdlib@go1.26.8
1.26.9
12
grafana/grafana:latestb28bae15e219
stdlib@go1.26.7
1.26.9
12
library/postgres:18:18.6:18.6-trixie:latest5a5a84b19854
stdlib@go1.24.6
1.26.9
12
library/postgres:15-alpinef7d23353e1b1
stdlib@go1.24.6
1.26.9
12
registry.k8s.io/kube-state-metrics/kube-state-metrics:v2.18.01545919b72e3
stdlib@go1.25.5
1.26.9
12
registry.k8s.io/sig-storage/csi-node-driver-registrar:v2.17.0f9de845b1701
stdlib@go1.26.3
1.26.9
12
registry.k8s.io/sig-storage/csi-provisioner:v6.3.0a4b0b1a37605
stdlib@go1.26.3
1.26.9
12
library/mariadb:13.0.2:latestf1bba652ba57
stdlib@go1.26.7
1.26.9
11
library/mysql:8.0.28fc77d54cacef
stdlib@go1.16.7
1.26.9
11
ethpandaops/xatu:latestef8eb43af9bb
stdlib@go1.26.8
1.26.9
10
grafana/grafana:13.2.3-distroless202e5d5b3f84
stdlib@go1.26.7
1.26.9
10
jwilder/dockerize:latestf94fb59fb4f6
stdlib@go1.25.5
1.26.9
10
library/mongo:5.0.6-focal8e70544b6c76
stdlib@go1.16.7
1.26.9
10
library/mongo:9.0.2:latestbac22ea7710d
stdlib@go1.26.8
1.26.9
10
library/mysql:26.7.0:latest9d48c42f8341
stdlib@go1.24.6
1.26.9
10
quay.io/prometheus/node-exporter:v1.8.24032c6d5bfd7
stdlib@go1.22.5
1.26.9
10
ghcr.io/jkroepke/kube-webhook-certgen:1.8.958e4ac2e15bf
stdlib@go1.27.1
1.26.9
9
dtzar/helm-kubectl:3.14.455429449408e
stdlib@go1.21.8
1.26.9
8
library/postgres:161a6ab3f5345e
stdlib@go1.24.6
1.26.9
8
library/rabbitmq:3.13-management:3-managemente582c0bc7766
stdlib@go1.22.2
1.26.9
8
prom/pushgateway:v1.4.2a684e7c830a4
stdlib@go1.16.9
1.26.9
8
quay.io/prometheus/alertmanager:latest:v0.34.1e9733bafb1bd
stdlib@go1.26.8
1.26.9
8
quay.io/prometheus/node-exporter:v1.12.1-distroless8c9bac11973b
stdlib@go1.26.5
1.26.9
8
quay.io/prometheus/node-exporter:v1.0.1cf66a6bbd573
stdlib@go1.14.4
1.26.9
8
registry.k8s.io/sig-storage/csi-node-driver-registrar:v2.15.011f199f6bec4
stdlib@go1.24.6
1.26.9
8
registry.k8s.io/sig-storage/csi-resizer:v2.2.1ea1d25e23479
stdlib@go1.26.3
1.26.9
8
bitnami/kubectl:latest999d5eb28f40
stdlib@go1.26.8
1.26.9
7
bitnami/mariadb:latest354e5aec2045
stdlib@go1.26.8
1.26.9
7
bitnami/nginx:latestb8d42f076789
stdlib@go1.26.8
1.26.9
7
library/ubuntu:latestf144425ff09b
stdlib@go1.26.7
1.26.9
7
osixia/openldap:1.5.018742e9c449c
stdlib@go1.15.5
1.26.9
7
wurstmeister/kafka:latest2d4bbf9cc83d
stdlib@go1.17.10
1.26.9
7
public.ecr.aws/aktosecurity/confluentinc-cp-kafka:8.2.2:8.2.2-1-ubi98e01c0305844
stdlib@go1.26.4
1.26.9
7

syft 1.42.1 · advisories as of 12 Oct 2026

Corrections: contact@stackradar.io

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