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
5,295
of 18,117 indexed, latest versions
Container images
6,105
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 5,295 of 18,117 indexed charts deploy, on 6,105 images.

Affected packageAffected versionsFixed inImages
stdlibgolanggo1.13, go1.13.1, go1.13.3, go1.13.4+212 more1.26.96,105
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

5,295 by stars
ChartLatestAffected imagesRadar Score
pagessarubits-pages1.0.01 of 3See more

pages sarubits-pages 1.0.0

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

Container imageDigestPackageFixed in
library/mysql:8.07dcddc01f13b
stdlib@go1.24.6
1.26.9

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21,318
grafanasaurabh6-grafana0.2.01 of 1See more

grafana saurabh6-grafana 0.2.0

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

Container imageDigestPackageFixed in
saurabh6/grafana_setup:v15c140fda7486
stdlib@go1.16.1
1.26.9

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3,676
prometheussaurabh6-prometheus0.2.01 of 1See more

prometheus saurabh6-prometheus 0.2.0

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

Container imageDigestPackageFixed in
saurabh6/prometheus_setup:v19d4dbe7c1815
stdlib@go1.16.5
1.26.9

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3,852
airflowsb-helm-charts0.3.01 of 1See more

airflow sb-helm-charts 0.3.0

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

Container imageDigestPackageFixed in
apache/airflow:2.8.1e5560ad0b86e
stdlib@go1.19.8
1.26.9

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11,766
grafanasb-helm-charts0.4.01 of 1See more

grafana sb-helm-charts 0.4.0

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

Container imageDigestPackageFixed in
grafana/grafana:12.2.22ebef928d7e5
stdlib@go1.25.3
1.26.9

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2,369
harborsb-helm-charts0.3.02 of 2See more

harbor sb-helm-charts 0.3.0

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

Container imageDigestPackageFixed in
goharbor/harbor-core:v2.11.1c017dd84ee96
stdlib@go1.22.6
1.26.9
goharbor/registry-photon:v2.11.15645d459af2b
stdlib@go1.22.6
1.26.9

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2,710
keycloaksb-helm-charts0.3.01 of 2See more

keycloak sb-helm-charts 0.3.0

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

Container imageDigestPackageFixed in
library/postgres:16-alpine721873c34ceb
stdlib@go1.24.6
1.26.9

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3,063
lokisb-helm-charts0.4.01 of 1See more

loki sb-helm-charts 0.4.0

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

Container imageDigestPackageFixed in
grafana/loki:3.6.192bd5700577b
stdlib@go1.24.10
1.26.9

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1,315
mimirsb-helm-charts0.3.01 of 1See more

mimir sb-helm-charts 0.3.0

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

Container imageDigestPackageFixed in
grafana/mimir:2.15.085f55510e0d3
stdlib@go1.23.2
1.26.9

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1,450
mongodbsb-helm-charts0.4.01 of 1See more

mongodb sb-helm-charts 0.4.0

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

Container imageDigestPackageFixed in
library/mongo:7.0.140032d2ca20db
stdlib@go1.21.12
1.26.9

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5,201
mysqlsb-helm-charts0.4.01 of 1See more

mysql sb-helm-charts 0.4.0

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

Container imageDigestPackageFixed in
library/mysql:8.4.3106d5197fd8e
stdlib@go1.18.2
1.26.9

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1,974
nextcloudsb-helm-charts0.4.01 of 2See more

nextcloud sb-helm-charts 0.4.0

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

Container imageDigestPackageFixed in
library/postgres:16-alpine721873c34ceb
stdlib@go1.24.6
1.26.9

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11,603
opentelemetry-collectorsb-helm-charts0.3.01 of 1See more

opentelemetry-collector sb-helm-charts 0.3.0

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

Container imageDigestPackageFixed in
otel/opentelemetry-collector-contrib:0.96.07ef2a2ff46b9
stdlib@go1.21.7
1.26.9

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2,436
postgresqlsb-helm-charts0.4.01 of 1See more

postgresql sb-helm-charts 0.4.0

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

Container imageDigestPackageFixed in
library/postgres:16.11468e1f126ca5
stdlib@go1.24.6
1.26.9

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3,160
promtailsb-helm-charts0.4.01 of 1See more

promtail sb-helm-charts 0.4.0

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

Container imageDigestPackageFixed in
grafana/promtail:3.6.18dcfdf466da0
stdlib@go1.24.10
1.26.9

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2,929
pushgatewaysb-helm-charts0.3.01 of 1See more

pushgateway sb-helm-charts 0.3.0

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

Container imageDigestPackageFixed in
quay.io/prometheus/pushgateway:v1.6.2979a69ab4a40
stdlib@go1.21.1
1.26.9

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1,868
redissb-helm-charts0.4.01 of 1See more

redis sb-helm-charts 0.4.0

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

Container imageDigestPackageFixed in
library/redis:7.4.1-alpinec1e88455c852
stdlib@go1.18.2
1.26.9

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2,187
temposb-helm-charts0.4.01 of 1See more

tempo sb-helm-charts 0.4.0

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

Container imageDigestPackageFixed in
grafana/tempo:2.9.065a578975943
stdlib@go1.25.1
1.26.9

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1,481
thanos-compactorsb-helm-charts0.3.01 of 1See more

thanos-compactor sb-helm-charts 0.3.0

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

Container imageDigestPackageFixed in
quay.io/thanos/thanos:v0.37.24ec6df40fdb9
stdlib@go1.23.4
1.26.9

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1,540
thanos-querysb-helm-charts0.3.01 of 1See more

thanos-query sb-helm-charts 0.3.0

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

Container imageDigestPackageFixed in
quay.io/thanos/thanos:v0.37.24ec6df40fdb9
stdlib@go1.23.4
1.26.9

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1,540
thanos-query-frontendsb-helm-charts0.3.01 of 1See more

thanos-query-frontend sb-helm-charts 0.3.0

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

Container imageDigestPackageFixed in
quay.io/thanos/thanos:v0.37.24ec6df40fdb9
stdlib@go1.23.4
1.26.9

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1,540
thanos-receivesb-helm-charts0.3.01 of 1See more

thanos-receive sb-helm-charts 0.3.0

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

Container imageDigestPackageFixed in
quay.io/thanos/thanos:v0.37.24ec6df40fdb9
stdlib@go1.23.4
1.26.9

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1,540
thanos-rulersb-helm-charts0.3.01 of 1See more

thanos-ruler sb-helm-charts 0.3.0

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

Container imageDigestPackageFixed in
quay.io/thanos/thanos:v0.37.24ec6df40fdb9
stdlib@go1.23.4
1.26.9

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1,540
thanos-sidecarsb-helm-charts0.3.01 of 1See more

thanos-sidecar sb-helm-charts 0.3.0

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

Container imageDigestPackageFixed in
quay.io/thanos/thanos:v0.37.24ec6df40fdb9
stdlib@go1.23.4
1.26.9

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1,540
thanos-storesb-helm-charts0.3.01 of 1See more

thanos-store sb-helm-charts 0.3.0

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

Container imageDigestPackageFixed in
quay.io/thanos/thanos:v0.37.24ec6df40fdb9
stdlib@go1.23.4
1.26.9

Open the chart page →

1,540
wordpresssb-helm-charts0.4.01 of 2See more

wordpress sb-helm-charts 0.4.0

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

Container imageDigestPackageFixed in
library/mysql:8.0-debian9382e4f6f7f0
stdlib@go1.24.6
1.26.9

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15,634
ed-traefikscaleway-charts0.2.01 of 1See more

ed-traefik scaleway-charts 0.2.0

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

Container imageDigestPackageFixed in
library/traefik:v1.7.345d47b7bb2546
stdlib@go1.16.12
1.26.9

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3,261
ed-traefik2scaleway-charts0.2.01 of 1See more

ed-traefik2 scaleway-charts 0.2.0

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

Container imageDigestPackageFixed in
library/traefik:2.5.62f603f8d3abe
stdlib@go1.17.5
1.26.9

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4,284
scaleway-certmanager-webhookscaleway-charts0.4.31 of 1See more

scaleway-certmanager-webhook scaleway-charts 0.4.3

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

Container imageDigestPackageFixed in
scaleway/cert-manager-webhook-scaleway:v0.1.36d94c970e710
stdlib@go1.26.5
1.26.9

Open the chart page →

449
scaleway-secrets-store-csiscaleway-charts0.1.11 of 1See more

scaleway-secrets-store-csi scaleway-charts 0.1.1

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

Container imageDigestPackageFixed in
scaleway/scaleway-secrets-store-csi:v0.1.19acc53a69962
stdlib@go1.26.5
1.26.9

Open the chart page →

527
postgresscalified-postgresVerified publisher18.4.01 of 1See more

postgres scalified-postgres 18.4.0

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

Container imageDigestPackageFixed in
library/postgres:18.4a02db8cac496
stdlib@go1.24.6
1.26.9

Open the chart page →

2,429
sonarqubescalified-sonarqubeVerified publisher26.9.01 of 2See more

sonarqube scalified-sonarqube 26.9.0

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

Container imageDigestPackageFixed in
library/postgres:16-alpine721873c34ceb
stdlib@go1.24.6
1.26.9

Open the chart page →

703
scalyr-k8snode-managerscalyr-k8snode-managerVerified publisher0.1.71 of 1See more

scalyr-k8snode-manager scalyr-k8snode-manager 0.1.7

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

Container imageDigestPackageFixed in
ghcr.io/dodevops/scalyr-k8snode-manager:latestfc39fcdd3968
stdlib@go1.18.1
1.26.9

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3,011
cert-manager-webhook-cloudnsschichtelVerified publisher1.2.01 of 1See more

cert-manager-webhook-cloudns schichtel 1.2.0

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

Container imageDigestPackageFixed in
ghcr.io/pschichtel/cert-manager-webhook-cloudns:1.1.01020638bbe23
stdlib@go1.21.6
1.26.9

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2,098
cosischichtelVerified publisher0.1.01 of 1See more

cosi schichtel 0.1.0

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

Container imageDigestPackageFixed in
gcr.io/k8s-staging-sig-storage/objectstorage-controller:v20221027-v0.1.1-8-g300019fa84b574e8027
stdlib@go1.18.3
1.26.9

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2,280
crproxyschichtelVerified publisher0.1.41 of 1See more

crproxy schichtel 0.1.4

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

Container imageDigestPackageFixed in
ghcr.io/daocloud/crproxy/crproxy:v0.8.0ee1eb3c9c9a1
stdlib@go1.21.11
1.26.9

Open the chart page →

1,956
dawarichschichtelVerified publisher0.4.01 of 1See more

dawarich schichtel 0.4.0

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

Container imageDigestPackageFixed in
freikin/dawarich:1.15.3589e3606b11b
stdlib@go1.24.4
1.26.9

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6,860
draytek-exporterschichtelVerified publisher0.2.41 of 1See more

draytek-exporter schichtel 0.2.4

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

Container imageDigestPackageFixed in
quay.io/superq/draytek-exporter:v0.2.03b577bdceaae
stdlib@go1.25.4
1.26.9

Open the chart page →

981
gickupschichtelVerified publisher0.0.41 of 1See more

gickup schichtel 0.0.4

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

Container imageDigestPackageFixed in
buddyspencer/gickup:0.10.386b656f19b0c1
stdlib@go1.22.5
1.26.9

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2,145
photonschichtelVerified publisher0.2.01 of 1See more

photon schichtel 0.2.0

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

Container imageDigestPackageFixed in
rtuszik/photon-docker:2.4.021549c60f9e6
stdlib@go1.22.2
1.26.9

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3,791
rabbitmq-cluster-operatorschichtelVerified publisher0.1.81 of 1See more

rabbitmq-cluster-operator schichtel 0.1.8

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

Container imageDigestPackageFixed in
ghcr.io/rabbitmq/cluster-operator:2.17.25d690e6cd856
stdlib@go1.25.4
1.26.9

Open the chart page →

755
rabbitmq-topology-operatorschichtelVerified publisher0.1.91 of 1See more

rabbitmq-topology-operator schichtel 0.1.9

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

Container imageDigestPackageFixed in
quay.io/rabbitmqoperator/messaging-topology-operator:1.18.1f97c36882244
stdlib@go1.24.6
1.26.9

Open the chart page →

862
s3-backupschichtelVerified publisher0.10.01 of 1See more

s3-backup schichtel 0.10.0

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

Container imageDigestPackageFixed in
ghcr.io/pschichtel/s3-backup:0.7.017666811f6a7
stdlib@go1.26.4
1.26.9

Open the chart page →

3,091
satisfactoryschichtelVerified publisher0.3.31 of 1See more

satisfactory schichtel 0.3.3

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

Container imageDigestPackageFixed in
wolveix/satisfactory-server:v1.9.9464d11e36e10
stdlib@go1.18.1
1.26.9

Open the chart page →

4,637
unifi-protectschichtelVerified publisher0.10.11 of 1See more

unifi-protect schichtel 0.10.1

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

Container imageDigestPackageFixed in
markdegroot/unifi-protect-arm64:latestd8445f2a0de6
stdlib@go1.20.2
1.26.9

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7,269
cert-manager-desec-webhookschmitzis0.0.11 of 1See more

cert-manager-desec-webhook schmitzis 0.0.1

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

Container imageDigestPackageFixed in
su541/cert-manager-desec-webhook:latest371ee33f83c1
stdlib@go1.19.10
1.26.9

Open the chart page →

2,518
cert-manager-webhook-bunnyschmitzis0.1.11 of 1See more

cert-manager-webhook-bunny schmitzis 0.1.1

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

Container imageDigestPackageFixed in
ghcr.io/schmitzis/cert-manager-webhook-bunny:latest125e31c8e85a
stdlib@go1.19.13
1.26.9

Open the chart page →

2,238
icinga2-masterschmitzis0.2.01 of 6See more

icinga2-master schmitzis 0.2.0

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

Container imageDigestPackageFixed in
grafana/grafana:8.0.3696823fbc561
stdlib@go1.16.1
1.26.9

Open the chart page →

4,958
outlineschmitzis0.0.81 of 4See more

outline schmitzis 0.0.8

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

Container imageDigestPackageFixed in
outlinewiki/outline:0.69.1d060dcd8f9aa
stdlib@go1.19.4
1.26.9

Open the chart page →

5,660
seafileschmitzis13.0.132 of 4See more

seafile schmitzis 13.0.13

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

Container imageDigestPackageFixed in
schmitzis/monorepo:seafile-13.0-latestc583f1be2af2
stdlib@go1.26.8
1.26.9
seafileltd/notification-server:13.0.211cac4101d0f4
stdlib@go1.26.2
1.26.9

Open the chart page →

44,538

Container images carrying it

6,105 by charts deploying them

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

Container imageDigestPackageFixed inUsed by
grafana/grafana:11.2.2-security-01464eac539793
stdlib@go1.22.7
1.26.9
1
grafana/grafana:11.5.15781759b3d27
stdlib@go1.23.5
1.26.9
1
grafana/grafana:11.6.062d2b9d20a19
stdlib@go1.23.7
1.26.9
1
grafana/grafana:8.0.3696823fbc561
stdlib@go1.16.1
1.26.9
1
grafana/grafana:10.2.36b5b37eb35bb
stdlib@go1.21.3
1.26.9
1
grafana/grafana:7.3.46d42886b3ebe
stdlib@go1.15.5
1.26.9
1
grafana/grafana:12.3.070d9599b186c
stdlib@go1.25.3
1.26.9
1
grafana/grafana:7.2.1733842cca5bd
stdlib@go1.15.1
1.26.9
1
grafana/grafana:12.2.074144189b384
stdlib@go1.24.6
1.26.9
1
grafana/grafana:9.4.376dcf36e7d2a
stdlib@go1.19.4
1.26.9
1
grafana/grafana:13.1.17cb8c64c4d57
stdlib@go1.26.3
1.26.9
1
grafana/grafana:10.3.38640e5038e83
stdlib@go1.21.5
1.26.9
1
grafana/grafana:11.5.28b37a2f028f1
stdlib@go1.23.5
1.26.9
1
grafana/grafana:9.1.19746858c20e6
stdlib@go1.17.12
1.26.9
1
grafana/grafana:12.1.1a1701c218024
stdlib@go1.24.6
1.26.9
1
grafana/grafana:9.0.1a738d0744784
stdlib@go1.17.11
1.26.9
1
grafana/grafana:10.4.19a9043254ba16
stdlib@go1.24.3
1.26.9
1
grafana/grafana:13.1.3ab5cb380e3ff
stdlib@go1.26.5
1.26.9
1
grafana/grafana:11.1.3b23b588cf7cb
stdlib@go1.22.4
1.26.9
1
grafana/grafana:12.0.2b5b59bfc7561
stdlib@go1.24.4
1.26.9
1
grafana/grafana:8.1.5b7dd9cd0e59d
stdlib@go1.16.1
1.26.9
1
grafana/grafana:12.3.2ba93c9d192e5
stdlib@go1.25.6
1.26.9
1
grafana/grafana:6.5.1befcd84da2c1
stdlib@go1.13.1
1.26.9
1
grafana/grafana:8.3.5cd7cb4345aa7
stdlib@go1.17.6
1.26.9
1
grafana/grafana:8.3.4cf81d2c753c8
stdlib@go1.17.6
1.26.9
1
grafana/grafana:7.4.5d322192ed2fa
stdlib@go1.15.6
1.26.9
1
grafana/grafana:9.3.6e5a9655dabef
stdlib@go1.19.4
1.26.9
1
grafana/grafana:8.5.3ecc1b80b8ca2
stdlib@go1.17.9
1.26.9
1
grafana/grafana:10.4.0f9811e4e687f
stdlib@go1.21.8
1.26.9
1
grafana/grafana:11.3.1fa801ab6e1ae
stdlib@go1.23.1
1.26.9
1
grafana/kubernetes-diff-logger:0.0.598f6d1cd1e25
stdlib@go1.16.5
1.26.9
1
grafana/logcli:main-c90366d-amd643d85bb66e39b
stdlib@go1.16.2
1.26.9
1
grafana/loki:2.9.1035b02acc6765
stdlib@go1.22.5
1.26.9
1
grafana/loki:2.9.26074e01dbe03
stdlib@go1.21.3
1.26.9
1
grafana/loki:2.9.66ca6e2cd3b6f
stdlib@go1.21.3
1.26.9
1
grafana/loki:3.0.0757b5fadf816
stdlib@go1.21.9
1.26.9
1
grafana/loki:2.0.077e138f81a8e
stdlib@go1.14.2
1.26.9
1
grafana/loki:3.7.487f0a0676737
stdlib@go1.26.5
1.26.9
1
grafana/loki:3.2.0882e30c20683
stdlib@go1.22.7
1.26.9
1
grafana/loki:3.3.28af2de1abbdd
stdlib@go1.23.4
1.26.9
1
grafana/loki:3.6.192bd5700577b
stdlib@go1.24.10
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grafana/loki:2.8.2b1da1d23037e
stdlib@go1.20.4
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grafana/loki:2.4.2b3af8ead67d7
stdlib@go1.17.2
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grafana/loki:3.6.3cd6e176883a9
stdlib@go1.24.11
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grafana/loki:3.7.6efd47c67f9ba
stdlib@go1.26.5
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grafana/loki-canary:3.6.121e9bfcff3867
stdlib@go1.26.4
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grafana/loki-canary:3.0.028d7c00588aa
stdlib@go1.21.9
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grafana/loki-canary:3.1.039baf6d67f85
stdlib@go1.22.2
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grafana/loki-canary:2.9.24249db29b992
stdlib@go1.21.3
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grafana/loki-canary:3.2.049e03f80d361
stdlib@go1.22.7
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syft 1.42.1 · advisories as of 13 Oct 2026

Corrections: contact@stackradar.io

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