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
5,293
of 18,131 indexed, latest versions
Container images
6,123
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 5,293 of 18,131 indexed charts deploy, on 6,123 images.

Affected packageAffected versionsFixed inImages
stdlibgolanggo1.13, go1.13.1, go1.13.3, go1.13.4+209 more1.26.96,123
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

5,293 by stars
ChartLatestAffected imagesRadar Score
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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2,708
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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3,076
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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1,314
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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1,449
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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5,249
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

Open the chart page →

11,740
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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2,435
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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3,164
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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2,976
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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1,867
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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1,480
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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1,539
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

Open the chart page →

1,539
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

Open the chart page →

1,539
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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1,539
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

Open the chart page →

1,539
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

Open the chart page →

1,539
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 →

1,539
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

Open the chart page →

15,728
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

Open the chart page →

3,250
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

Open the chart page →

4,274
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 →

2,434
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

Open the chart page →

3,012
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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2,097
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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6,876
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 →

980
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

Open the chart page →

2,144
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

Open the chart page →

3,847
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 →

3,172
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 →

4,685
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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7,271
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 →

2,519
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 →

4,947
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 →

5,658
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 →

44,456
version-checkerschmitzis0.2.21 of 1See more

version-checker schmitzis 0.2.2

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

Open the chart page →

4,257
vikunjaschmitzis1.0.01 of 3See more

vikunja schmitzis 1.0.0

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

Container imageDigestPackageFixed in
vikunja/vikunja:0.24.6ed1f3ed467fe
stdlib@go1.23.4
1.26.9

Open the chart page →

5,204
koffanschoenwald0.1.81 of 1See more

koffan schoenwald 0.1.8

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

Container imageDigestPackageFixed in
ghcr.io/pansalut/koffan:v2.13.12c4dfb1458e6
stdlib@go1.26.6
1.26.9

Open the chart page →

174
minifluxschoenwald0.1.61 of 1See more

miniflux schoenwald 0.1.6

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

Container imageDigestPackageFixed in
miniflux/miniflux:2.3.349d7b6098761
stdlib@go1.26.5
1.26.9

Open the chart page →

540
uptime-kumaschoenwald1.0.101 of 1See more

uptime-kuma schoenwald 1.0.10

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

Container imageDigestPackageFixed in
louislam/uptime-kuma:2.5.4917318f9d7be
stdlib@go1.20.5
1.26.9

Open the chart page →

36,895

Container images carrying it

6,123 by charts deploying them

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

Container imageDigestPackageFixed inUsed by
temporalio/admin-tools:1.28cfde8170c92f
stdlib@go1.25.8
1.26.9
1
temporalio/auto-setup:1.29.15b3502a3b685
stdlib@go1.25.0
1.26.9
1
temporalio/auto-setup:1.27.2b44cbfeb43db
stdlib@go1.23.2
1.26.9
1
temporalio/server:1.26.21e2626efcbc1
stdlib@go1.23.2
1.26.9
1
temporalio/server:1.25.08a5798191dea
stdlib@go1.22.3
1.26.9
1
temporalio/server:1.32.1acecbab5b0b8
stdlib@go1.26.8
1.26.9
1
temporalio/server:1.29.1c1e3326b2ce1
stdlib@go1.25.0
1.26.9
1
temporalio/server:1.22.0ddeebf8bad8f
stdlib@go1.19.11
1.26.9
1
temporalio/temporal-proxy:v0.5.0e9dc65181b93
stdlib@go1.26.4
1.26.9
1
temporalio/ui:2.44.00b36e00aad30
stdlib@go1.24.11
1.26.9
1
temporalio/ui:2.30.25c2a3645d09c
stdlib@go1.22.1
1.26.9
1
temporalio/ui:2.33.05c586a3c8ec5
stdlib@go1.23.0
1.26.9
1
temporalio/ui:2.54.1ff0943fe532b
stdlib@go1.26.5
1.26.9
1
tensorzero/ui:2026.6.0f2563d54724e
stdlib@go1.23.12
1.26.9
1
tenureai/tenure:v1.0.285f5b222df9a5
stdlib@go1.26.2
1.26.9
1
thanosio/thanos:v0.19.088276fcd1491
stdlib@go1.15.10
1.26.9
1
thanosio/thanos:v0.15.0b12d5c31bf5a
stdlib@go1.14.2
1.26.9
1
thecampagnards/trafficlight-api:main7dca9d973837
stdlib@go1.16.4
1.26.9
1
thecodingmachine/workadventure-back:helm-chart53a30c962ce9
stdlib@go1.20.12
1.26.9
1
thecodingmachine/workadventure-back:v1.17.764001369dad5
stdlib@go1.20.7
1.26.9
1
thecodingmachine/workadventure-ejabberd:v1.17.701df99622ad3
stdlib@go1.17.13
1.26.9
1
thecodingmachine/workadventure-ejabberd:helm-charte1775ca7b145
stdlib@go1.17.13
1.26.9
1
thecodingmachine/workadventure-map-storage:helm-chart519c31c6e7ec
stdlib@go1.20.12
1.26.9
1
thecodingmachine/workadventure-map-storage:v1.17.75bdab56da2fa
stdlib@go1.19.3
1.26.9
1
thecodingmachine/workadventure-play:v1.17.7d8f66979b9b4
stdlib@go1.20.7
1.26.9
1
thecodingmachine/workadventure-play:helm-chartdf31006cc4ce
stdlib@go1.20.12
1.26.9
1
thecodingmachine/workadventure-uploader:v1.17.73ccd467543b3
stdlib@go1.20.7
1.26.9
1
thecodingmachine/workadventure-uploader:helm-chart962e98843fb2
stdlib@go1.20.12
1.26.9
1
thelande/openmeteo_exporter:v1.0.77e9072ace15f
stdlib@go1.23.11
1.26.9
1
thelisdeep/pii-shield:2.2.76a8b0c89227b
stdlib@go1.27.1
1.26.9
1
thesisrobot/lnd:v0.16.4-beta-c287129953689
stdlib@go1.21.0
1.26.9
1
thesisrobot/lnd:v0.14.1-betad94c8dbf6dac
stdlib@go1.17.1
1.26.9
1
thetorproject/snowflake-proxy:v2.11.01ddc5069d354
stdlib@go1.23.7
1.26.9
1
thev1ndu/transfergw:latesta07203713933
stdlib@go1.26.8
1.26.9
1
thijsvanloef/palworld-server-docker:v2.7.1401d3eb5c053
stdlib@go1.25.12
1.26.9
1
thijsvanloef/palworld-server-docker:v2.5.0b4ac9ee22483
stdlib@go1.26.3
1.26.9
1
thingsboard/toolbox:1.29.00f6c14031777
stdlib@go1.27.0
1.26.9
1
thomseddon/traefik-forward-auth:269a2c985d2c5
stdlib@go1.13.12
1.26.9
1
thomseddon/traefik-forward-auth:latestb364aa6a4117
stdlib@go1.13.15
1.26.9
1
tile38/tile38:1.38.05b61c6f3b32e
stdlib@go1.26.4
1.26.9
1
tile38/tile38:1.33.4afb7e82f9485
stdlib@go1.23.2
1.26.9
1
timescale/timescaledb:latest-pg12645fd9e92d76
stdlib@go1.18.7
1.26.9
1
timescale/timescaledb:latest-pg166f139d560429
stdlib@go1.26.2
1.26.9
1
timescale/timescaledb-ha:pg15-latesta8e3322e1cf9
stdlib@go1.19.1
1.26.9
1
timescale/timescaledb-ha:pg14.6-ts2.9.1-p1cdb9ae118899
stdlib@go1.19.1
1.26.9
1
timescale/timescaledb-ha:pg17.2-ts2.18.2e8d0a9cc3db5
stdlib@go1.21.13
1.26.9
1
timescale/timescaledb-ha:pg16e9f34d8dd276
stdlib@go1.27.1
1.26.9
1
timescale/timescaledb-ha:pg14-ts2.6-latested719c0cd19d
stdlib@go1.15.6
1.26.9
1
timescale/timescaledb-postgis:latest-pg127758704d4a14
stdlib@go1.14
1.26.9
1
timonwong/prometheus-webhook-dingtalk:v1.4.0a0fcc028bd8d
stdlib@go1.13.5
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.