StackRadar

CVE-2026-39820

High

Advisory

Published 7 May 2026In the index since 5 Sept 2026
Severity
High
worst across findings
CVSS
7.5
base score, highest
EPSS
0.009
57th percentile
CISA KEV
Not listed
no confirmed exploitation
Charts affected
4,224
of 17,985 indexed, latest versions
Container images
4,756
deployed by those charts
Fix available
1 of 2
affected packages

Quadratic string concatentation in consumeComment in net/mail

Carried by container images the latest versions of 4,224 of 17,985 indexed charts deploy, on 4,756 images.

Affected packageAffected versionsFixed inImages
golang-1.19deb1.19.8-2no fix listed1
stdlibgolanggo1.13, go1.13.1, go1.13.3, go1.13.4+183 more1.25.104,756
OSV records
DEBIAN-CVE-2026-39820GO-2026-4986
Also known as
BIT-golang-2026-39820

Charts affected

4,224 by stars
ChartLatestAffected imagesRadar Score
cluster-proxyappscodeVerified publisher2024.2.251 of 1See more

cluster-proxy appscode 2024.2.25

1 of the 1 container images this version deploys carry CVE-2026-39820.

Container imageDigestPackageFixed in
ghcr.io/kluster-manager/cluster-proxy:latest27a5c64b7ea8
stdlib@go1.21.8
1.25.10

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1,127
cluster-proxy-managerappscodeVerified publisher2026.6.261 of 1See more

cluster-proxy-manager appscode 2026.6.26

1 of the 1 container images this version deploys carry CVE-2026-39820.

Container imageDigestPackageFixed in
ghcr.io/kluster-manager/cluster-proxy:v0.10.1a7fce69e171c
stdlib@go1.22.4
1.25.10

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1,711
dns-proxyappscodeVerified publisher2026.9.111 of 1See more

dns-proxy appscode 2026.9.11

1 of the 1 container images this version deploys carry CVE-2026-39820.

Container imageDigestPackageFixed in
ghcr.io/appscode/cloudflare-dns-proxy:v0.0.5dfbef0285e14
stdlib@go1.25.5
1.25.10

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649
docker-machine-operatorappscodeVerified publisher2024.7.91 of 1See more

docker-machine-operator appscode 2024.7.9

1 of the 1 container images this version deploys carry CVE-2026-39820.

Container imageDigestPackageFixed in
ghcr.io/appscode/docker-machine-operator:v0.0.481f6007abb4e
stdlib@go1.22.4
1.25.10

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2,233
falco-ui-serverappscodeVerified publisher2026.1.152 of 2See more

falco-ui-server appscode 2026.1.15

2 of the 2 container images this version deploys carry CVE-2026-39820.

Container imageDigestPackageFixed in
rancher/kine:v0.11.412889bbcd1e8
stdlib@go1.21.5
1.25.10
ghcr.io/appscode/falco-ui-server:v0.0.66ec488d89b56
stdlib@go1.25.5
1.25.10

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2,987
fluxcd-addon-managerappscodeVerified publisher2024.2.251 of 1See more

fluxcd-addon-manager appscode 2024.2.25

1 of the 1 container images this version deploys carry CVE-2026-39820.

Container imageDigestPackageFixed in
ghcr.io/kluster-manager/fluxcd-addon:v0.0.23acba3df8827
stdlib@go1.22.3
1.25.10

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1,325
fluxcd-managerappscodeVerified publisher2026.2.161 of 1See more

fluxcd-manager appscode 2026.2.16

1 of the 1 container images this version deploys carry CVE-2026-39820.

Container imageDigestPackageFixed in
ghcr.io/kluster-manager/fluxcd-addon:v0.0.103475404bef5c
stdlib@go1.25.6
1.25.10

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1,168
gateway-converterappscodeVerified publisher2024.8.301 of 1See more

gateway-converter appscode 2024.8.30

1 of the 1 container images this version deploys carry CVE-2026-39820.

Container imageDigestPackageFixed in
ghcr.io/voyagermesh/gateway-converter:v0.0.1b92123805584
stdlib@go1.23.1
1.25.10

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1,309
gcp-credential-managerappscodeVerified publisher2026.3.111 of 1See more

gcp-credential-manager appscode 2026.3.11

1 of the 1 container images this version deploys carry CVE-2026-39820.

Container imageDigestPackageFixed in
ghcr.io/appscode/gcp-credential-manager:v0.1.0b58345fe8209
stdlib@go1.25.8
1.25.10

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1,100
gh-ci-webhookappscodeVerified publisher2026.9.111 of 1See more

gh-ci-webhook appscode 2026.9.11

1 of the 1 container images this version deploys carry CVE-2026-39820.

Container imageDigestPackageFixed in
ghcr.io/appscode/gh-ci-webhook:v0.0.2036ce246d884e
stdlib@go1.24.0
1.25.10

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1,494
grafanaappscodeVerified publisher2026.9.111 of 1See more

grafana appscode 2026.9.11

1 of the 1 container images this version deploys carry CVE-2026-39820.

Container imageDigestPackageFixed in
ghcr.io/appscode/grafana:v2025.2.367d18880448c
stdlib@go1.17.1
1.25.10

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2,346
grafana-opscenterappscodeVerified publisher2023.3.231 of 1See more

grafana-opscenter appscode 2023.3.23

1 of the 1 container images this version deploys carry CVE-2026-39820.

Container imageDigestPackageFixed in
ghcr.io/appscode/grafana-tools:v0.0.22c7b9b0a9101
stdlib@go1.20.2
1.25.10

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1,431
grafana-ui-serverappscodeVerified publisher2022.6.141 of 1See more

grafana-ui-server appscode 2022.6.14

1 of the 1 container images this version deploys carry CVE-2026-39820.

Container imageDigestPackageFixed in
ghcr.io/appscode/grafana-tools:v0.0.1f60324bca644
stdlib@go1.19.4
1.25.10

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1,576
inbox-agentappscodeVerified publisher2026.6.21 of 2See more

inbox-agent appscode 2026.6.2

1 of the 2 container images this version deploys carry CVE-2026-39820.

Container imageDigestPackageFixed in
ghcr.io/appscode/kube-rbac-proxy:v0.15.0d8cc6ffb9819
stdlib@go1.21.3
1.25.10

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1,841
inbox-server-distributedappscodeVerified publisher2025.12.251 of 4See more

inbox-server-distributed appscode 2025.12.25

1 of the 4 container images this version deploys carry CVE-2026-39820.

Container imageDigestPackageFixed in
library/cassandra:4.1.37cbcec0086ac
stdlib@go1.18.2
1.25.10

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17,093
james-komposeappscodeVerified publisher0.1.01 of 4See more

james-kompose appscode 0.1.0

1 of the 4 container images this version deploys carry CVE-2026-39820.

Container imageDigestPackageFixed in
library/cassandra:4.1.37cbcec0086ac
stdlib@go1.18.2
1.25.10

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18,463
kube-auth-managerappscodeVerified publisher2023.11.141 of 1See more

kube-auth-manager appscode 2023.11.14

1 of the 1 container images this version deploys carry CVE-2026-39820.

Container imageDigestPackageFixed in
ghcr.io/appscode/kube-auth-manager:v0.0.1789692ab9193
stdlib@go1.20.2
1.25.10

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1,945
kube-auth-proxyappscodeVerified publisher2023.11.141 of 1See more

kube-auth-proxy appscode 2023.11.14

1 of the 1 container images this version deploys carry CVE-2026-39820.

Container imageDigestPackageFixed in
ghcr.io/appscode/kube-auth-manager:v0.0.1789692ab9193
stdlib@go1.20.2
1.25.10

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1,945
kube-bind-serverappscodeVerified publisher2023.3.231 of 1See more

kube-bind-server appscode 2023.3.23

1 of the 1 container images this version deploys carry CVE-2026-39820.

Container imageDigestPackageFixed in
ghcr.io/appscode/kube-bind-server:v0.0.11762f3f6bb71
stdlib@go1.20.2
1.25.10

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2,051
kubedb-certifiedappscodeVerified publisher2026.7.101 of 8See more

kubedb-certified appscode 2026.7.10

1 of the 8 container images this version deploys carry CVE-2026-39820.

Container imageDigestPackageFixed in
ghcr.io/appscode/kubectl-nonroot:1.340b26892cec94
stdlib@go1.24.13
1.25.10

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5,100
kubedb-communityappscodeVerified publisher0.24.21 of 2See more

kubedb-community appscode 0.24.2

1 of the 2 container images this version deploys carry CVE-2026-39820.

Container imageDigestPackageFixed in
kubedb/operator:v0.24.01a06ff0bda52
stdlib@go1.17.6
1.25.10

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2,559
kubedb-enterpriseappscodeVerified publisher0.11.21 of 2See more

kubedb-enterprise appscode 0.11.2

1 of the 2 container images this version deploys carry CVE-2026-39820.

Container imageDigestPackageFixed in
kubedb/kubedb-enterprise:v0.11.05829bcedcb0d
stdlib@go1.17.3
1.25.10

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2,584
kubedb-oneappscodeVerified publisher2023.12.289 of 10See more

kubedb-one appscode 2023.12.28

9 of the 10 container images this version deploys carry CVE-2026-39820.

Container imageDigestPackageFixed in
prom/pushgateway:v1.4.2a684e7c830a4
stdlib@go1.16.9
1.25.10
ghcr.io/kubedb/kubedb-autoscaler:v0.25.0df6b11907d33
stdlib@go1.21.5
1.25.10
ghcr.io/kubedb/kubedb-dashboard:v0.16.07bfe1c07bd9b
stdlib@go1.20.7
1.25.10
ghcr.io/kubedb/kubedb-ops-manager:v0.27.1ec36422b09af
stdlib@go1.20.14
1.25.10
ghcr.io/kubedb/kubedb-provisioner:v0.40.242574f512837
stdlib@go1.20.14
1.25.10
ghcr.io/kubedb/kubedb-schema-manager:v0.16.09518de37eed5
stdlib@go1.20.7
1.25.10
ghcr.io/kubedb/kubedb-webhook-server:v0.16.2e24894e32cbc
stdlib@go1.20.14
1.25.10
ghcr.io/stashed/stash-crd-installer:v0.32.0c6f2a844b5dd
stdlib@go1.20.8
1.25.10
ghcr.io/stashed/stash-enterprise:v0.32.0e9bde36e34b7
stdlib@go1.20.7
1.25.10

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15,342
kubedb-provider-awsappscodeVerified publisher2026.7.101 of 1See more

kubedb-provider-aws appscode 2026.7.10

1 of the 1 container images this version deploys carry CVE-2026-39820.

Container imageDigestPackageFixed in
ghcr.io/kubedb/provider-aws:v0.27.049b1c312e342
stdlib@go1.20.7
1.25.10

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2,541
kubedb-provider-azureappscodeVerified publisher2026.7.101 of 1See more

kubedb-provider-azure appscode 2026.7.10

1 of the 1 container images this version deploys carry CVE-2026-39820.

Container imageDigestPackageFixed in
ghcr.io/kubedb/provider-azure:v0.27.0aa0c8526ae5e
stdlib@go1.19.3
1.25.10

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2,719
kubedb-provider-gcpappscodeVerified publisher2026.7.102 of 2See more

kubedb-provider-gcp appscode 2026.7.10

2 of the 2 container images this version deploys carry CVE-2026-39820.

Container imageDigestPackageFixed in
ghcr.io/appscode/kubectl-nonroot:1.340b26892cec94
stdlib@go1.24.13
1.25.10
ghcr.io/kubedb/provider-gcp:v0.27.0a1d4cf8b8fe1
stdlib@go1.19.1
1.25.10

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3,053
kubedb-ui-serverappscodeVerified publisher2021.12.211 of 1See more

kubedb-ui-server appscode 2021.12.21

1 of the 1 container images this version deploys carry CVE-2026-39820.

Container imageDigestPackageFixed in
kubedb/kubedb-ui-server:v0.0.1_linux_amd647d27865514ee
stdlib@go1.17.8
1.25.10

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2,055
kubeform-provider-awsappscodeVerified publisher2023.11.11 of 1See more

kubeform-provider-aws appscode 2023.11.1

1 of the 1 container images this version deploys carry CVE-2026-39820.

Container imageDigestPackageFixed in
ghcr.io/kubeform/provider-aws:v0.0.1e3d1f1302e49
stdlib@go1.19.1
1.25.10

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2,810
kubeform-provider-azureappscodeVerified publisher2023.11.11 of 1See more

kubeform-provider-azure appscode 2023.11.1

1 of the 1 container images this version deploys carry CVE-2026-39820.

Container imageDigestPackageFixed in
ghcr.io/kubeform/provider-azure:v0.0.1ac8459f70f85
stdlib@go1.20.5
1.25.10

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2,731
kubeform-provider-gcpappscodeVerified publisher2023.11.11 of 1See more

kubeform-provider-gcp appscode 2023.11.1

1 of the 1 container images this version deploys carry CVE-2026-39820.

Container imageDigestPackageFixed in
ghcr.io/kubeform/provider-gcp:v0.0.1af77073c184f
stdlib@go1.19.9
1.25.10

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2,757
kubestashappscodeVerified publisher2026.7.102 of 2See more

kubestash appscode 2026.7.10

2 of the 2 container images this version deploys carry CVE-2026-39820.

Container imageDigestPackageFixed in
ghcr.io/appscode/kubectl-nonroot:1.340b26892cec94
stdlib@go1.24.13
1.25.10
ghcr.io/kubestash/kubestash:v0.29.00686b2a40280
stdlib@go1.25.5
1.25.10

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961
kubestash-certifiedappscodeVerified publisher2026.7.102 of 2See more

kubestash-certified appscode 2026.7.10

2 of the 2 container images this version deploys carry CVE-2026-39820.

Container imageDigestPackageFixed in
ghcr.io/appscode/kubectl-nonroot:1.340b26892cec94
stdlib@go1.24.13
1.25.10
ghcr.io/kubestash/kubestash:v0.29.00686b2a40280
stdlib@go1.25.5
1.25.10

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961
kubestash-operatorappscodeVerified publisher0.29.02 of 2See more

kubestash-operator appscode 0.29.0

2 of the 2 container images this version deploys carry CVE-2026-39820.

Container imageDigestPackageFixed in
ghcr.io/appscode/kubectl-nonroot:1.340b26892cec94
stdlib@go1.24.13
1.25.10
ghcr.io/kubestash/kubestash:v0.29.00686b2a40280
stdlib@go1.25.5
1.25.10

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961
kubevaultappscodeVerified publisher2026.8.71 of 2See more

kubevault appscode 2026.8.7

1 of the 2 container images this version deploys carry CVE-2026-39820.

Container imageDigestPackageFixed in
ghcr.io/appscode/kubectl-nonroot:1.340b26892cec94
stdlib@go1.24.13
1.25.10

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921
kubevault-certifiedappscodeVerified publisher2026.2.271 of 1See more

kubevault-certified appscode 2026.2.27

1 of the 1 container images this version deploys carry CVE-2026-39820.

Container imageDigestPackageFixed in
ghcr.io/kubevault/vault-operator:v0.24.00087cb49616f
stdlib@go1.25.9
1.25.10

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1,240
kubevault-webhook-serverappscodeVerified publisher0.25.01 of 2See more

kubevault-webhook-server appscode 0.25.0

1 of the 2 container images this version deploys carry CVE-2026-39820.

Container imageDigestPackageFixed in
ghcr.io/appscode/kubectl-nonroot:1.340b26892cec94
stdlib@go1.24.13
1.25.10

Open the chart page →

921
kubevirt-infra-csi-driverappscodeVerified publisher0.1.02 of 6See more

kubevirt-infra-csi-driver appscode 0.1.0

2 of the 6 container images this version deploys carry CVE-2026-39820.

Container imageDigestPackageFixed in
quay.io/kubevirt/kubevirt-csi-driver:latest7b31b21b3f1e
stdlib@go1.24.13
1.25.10
registry.k8s.io/sig-storage/csi-resizer:v1.13.12a0b297cc7c4
stdlib@go1.23.1
1.25.10

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1,932
kubevirt-tenant-csi-driverappscodeVerified publisher0.1.02 of 4See more

kubevirt-tenant-csi-driver appscode 0.1.0

2 of the 4 container images this version deploys carry CVE-2026-39820.

Container imageDigestPackageFixed in
quay.io/kubevirt/kubevirt-csi-driver:latest7b31b21b3f1e
stdlib@go1.24.13
1.25.10
registry.k8s.io/sig-storage/snapshot-controller:v6.3.1ce6ca3c0e30b
stdlib@go1.20.5
1.25.10

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1,765
license-proxyserver-addon-managerappscodeVerified publisher2024.2.251 of 1See more

license-proxyserver-addon-manager appscode 2024.2.25

1 of the 1 container images this version deploys carry CVE-2026-39820.

Container imageDigestPackageFixed in
ghcr.io/appscode/license-proxyserver:v0.0.8d6c2532ea386
stdlib@go1.22.1
1.25.10

Open the chart page →

1,405
managed-serviceaccountappscodeVerified publisher2024.2.251 of 1See more

managed-serviceaccount appscode 2024.2.25

1 of the 1 container images this version deploys carry CVE-2026-39820.

Container imageDigestPackageFixed in
ghcr.io/kluster-manager/managed-serviceaccount:latest365183f83ac9
stdlib@go1.22.0
1.25.10

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2,445
managed-serviceaccount-managerappscodeVerified publisher2026.2.161 of 1See more

managed-serviceaccount-manager appscode 2026.2.16

1 of the 1 container images this version deploys carry CVE-2026-39820.

Container imageDigestPackageFixed in
ghcr.io/kluster-manager/managed-serviceaccount:v0.10.0fc256885915b
stdlib@go1.25.8
1.25.10

Open the chart page →

981
marketplace-apiappscodeVerified publisher2026.9.111 of 1See more

marketplace-api appscode 2026.9.11

1 of the 1 container images this version deploys carry CVE-2026-39820.

Container imageDigestPackageFixed in
ghcr.io/appscode/b3:v2026.9.1139076a89c36b
stdlib@go1.25.3
1.25.10

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2,638
minioappscodeVerified publisher2026.9.111 of 1See more

minio appscode 2026.9.11

1 of the 1 container images this version deploys carry CVE-2026-39820.

Container imageDigestPackageFixed in
minio/minio:RELEASE.2023-01-12T02-06-16Zfc6bedc99355
stdlib@go1.19.4
1.25.10

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4,261
multicluster-controlplaneappscodeVerified publisher2025.4.301 of 1See more

multicluster-controlplane appscode 2025.4.30

1 of the 1 container images this version deploys carry CVE-2026-39820.

Container imageDigestPackageFixed in
ghcr.io/kluster-manager/multicluster-controlplane:latest6de40f528be9
stdlib@go1.21.8
1.25.10

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2,639
multicluster-ingress-readerappscodeVerified publisher2024.7.101 of 1See more

multicluster-ingress-reader appscode 2024.7.10

1 of the 1 container images this version deploys carry CVE-2026-39820.

Container imageDigestPackageFixed in
ghcr.io/appscode/kubectl-nonroot:1.340b26892cec94
stdlib@go1.24.13
1.25.10

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307
offline-license-serverappscodeVerified publisher2026.9.111 of 2See more

offline-license-server appscode 2026.9.11

1 of the 2 container images this version deploys carry CVE-2026-39820.

Container imageDigestPackageFixed in
ghcr.io/appscode/offline-license-server:v0.0.76e4b66308d8f6
stdlib@go1.25.5
1.25.10

Open the chart page →

1,770
opentelemetry-kube-stackappscodeVerified publisher0.14.123 of 3See more

opentelemetry-kube-stack appscode 0.14.12

3 of the 3 container images this version deploys carry CVE-2026-39820.

Container imageDigestPackageFixed in
rancher/kubectl:v1.34.1090bef429ed1
stdlib@go1.24.6
1.25.10
ghcr.io/open-telemetry/opentelemetry-operator/opentelemetry-operator:0.144.079b81912f1fb
stdlib@go1.25.6
1.25.10
quay.io/brancz/kube-rbac-proxy:v0.20.0147cb28fea35
stdlib@go1.25.1
1.25.10

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1,918
opscenter-configappscodeVerified publisher2022.6.141 of 2See more

opscenter-config appscode 2022.6.14

1 of the 2 container images this version deploys carry CVE-2026-39820.

Container imageDigestPackageFixed in
ghcr.io/appscode/panopticon:v0.0.62cdae231ed8a
stdlib@go1.19.4
1.25.10

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1,820
opscenter-coreappscodeVerified publisher2022.6.144 of 4See more

opscenter-core appscode 2022.6.14

4 of the 4 container images this version deploys carry CVE-2026-39820.

Container imageDigestPackageFixed in
ghcr.io/appscode/grafana-tools:v0.0.1f60324bca644
stdlib@go1.19.4
1.25.10
ghcr.io/appscode/kube-ui-server:v0.0.1340775d6850b5
stdlib@go1.19.5
1.25.10
ghcr.io/appscode/license-proxyserver:v0.0.372a5c874d854
stdlib@go1.19.6
1.25.10
ghcr.io/appscode/supervisor:v0.0.21a58f56724da
stdlib@go1.19.4
1.25.10

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7,758
panopticonappscodeVerified publisher2026.9.181 of 2See more

panopticon appscode 2026.9.18

1 of the 2 container images this version deploys carry CVE-2026-39820.

Container imageDigestPackageFixed in
ghcr.io/appscode/kubectl-nonroot:1.340b26892cec94
stdlib@go1.24.13
1.25.10

Open the chart page →

437

Container images carrying it

4,756 by charts deploying them

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

Container imageDigestPackageFixed inUsed by
registry.k8s.io/sig-storage/objectstorage-sidecar:v0.2.2c7166a73a303
stdlib@go1.24.11
1.25.10
1
registry.k8s.io/sig-storage/snapshot-controller:v8.2.1472fa35a89da
stdlib@go1.23.6
1.25.10
1
registry.k8s.io/sig-storage/snapshot-controller:v4.2.195587f8777d7
stdlib@go1.16.2
1.25.10
1
registry.k8s.io/sig-storage/snapshot-controller:v6.2.198bab4eaf23c
stdlib@go1.19
1.25.10
1
registry.k8s.io/sig-storage/snapshot-controller:v6.3.1ce6ca3c0e30b
stdlib@go1.20.5
1.25.10
1
registry.k8s.io/sig-storage/volume-data-source-validator:v1.0.0d35884236461
stdlib@go1.17.3
1.25.10
1

syft 1.42.1 · advisories as of 2 Oct 2026

Corrections: contact@stackradar.io

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