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: 0.008; 55th percentile
CISA KEV: Not listed; no confirmed exploitation
Charts affected: 4,017; of 17,821 indexed, latest versions
Container images: 4,602; 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 4,017 of 17,821 indexed charts deploy, on 4,602 images.

Affected package	Affected versions	Fixed in	Images
golang-1.19deb	1.19.8-2	no fix listed	1
stdlibgolang	go1.13, go1.13.1, go1.13.3, go1.13.4+181 more	1.25.10	4,602

OSV records: DEBIAN-CVE-2026-39820 GO-2026-4986
Also known as: BIT-golang-2026-39820

Charts affected

4,017 by stars

Chart

Latest

Affected images

Radar Score

nfs-subdir-external-provisionerxxl-job-admin

4.0.18

1 of 1 See more

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

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

Container image	Digest	Package	Fixed in
registry.k8s.io/sig-storage/nfs-subdir-external-provisioner :v4.0.2	63d5e04551ec	stdlib@go1.15	1.25.10

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2,746

nightingalexxl-job-admin

0.2.11

3 of 6 See more

nightingale xxl-job-admin 0.2.11

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

Container image	Digest	Package	Fixed in
flashcatcloud/nightingale :8.0.0-beta.11	ea1b0aaabe09	stdlib@go1.23.9	1.25.10
library/mysql :5.7	4bc6bc963e6d	stdlib@go1.18.2	1.25.10
quay.io/prometheus/prometheus :v2.54.1	f6639335d34a	stdlib@go1.22.6	1.25.10

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9,738

redisxxl-job-admin

24.1.3

1 of 1 See more

redis xxl-job-admin 24.1.3

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

Container image	Digest	Package	Fixed in
ghcr.io/dellnoantechnp/bitnami/redis :8.4.0	29064423c369	stdlib@go1.25.6	1.25.10

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314

pgbounceryasn77-pgbouncer

0.0.8

1 of 1 See more

pgbouncer yasn77-pgbouncer 0.0.8

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

Container image	Digest	Package	Fixed in
ghcr.io/yasn77/pgbouncer :v0.0.6	cc8c13550e44	stdlib@go1.18.6	1.25.10

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1,153

ygdrassil-monitoringygdrassil

0.4.0

7 of 10 See more

ygdrassil-monitoring ygdrassil 0.4.0

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

Container image	Digest	Package	Fixed in
grafana/grafana :11.5.1	5781759b3d27	stdlib@go1.23.5	1.25.10
prom/alertmanager :v0.28.0	d5155cfac40a	stdlib@go1.23.4	1.25.10
quay.io/prometheus-operator/prometheus-config-reloader :v0.79.2	193280a33bc1	stdlib@go1.23.4	1.25.10
quay.io/prometheus/node-exporter :v1.8.2	4032c6d5bfd7	stdlib@go1.22.5	1.25.10
quay.io/prometheus/prometheus :v3.1.0	6559acbd5d77	stdlib@go1.23.4	1.25.10
quay.io/prometheus/pushgateway :v1.11.0	99392035ae99	stdlib@go1.23.4	1.25.10
registry.k8s.io/kube-state-metrics/kube-state-metrics :v2.14.0	37d841299325	stdlib@go1.23.3	1.25.10

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9,526

prometheusalertygqygq2

1.0.0

1 of 1 See more

prometheusalert ygqygq2 1.0.0

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

Container image	Digest	Package	Fixed in
feiyu563/prometheus-alert :v4.9.1	224cfa68cbd9	stdlib@go1.20.6	1.25.10

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1,610

matrixdb-operatorymatrix

0.13.0

1 of 2 See more

matrixdb-operator ymatrix 0.13.0

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

Container image	Digest	Package	Fixed in
matrixdb/kubebuilder_kube-rbac-proxy :v0.12.0	ed3c7e6291e8	stdlib@go1.18.1	1.25.10

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1,966

rawfile-csiymatrix

0.2.1

4 of 4 See more

rawfile-csi ymatrix 0.2.1

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

Container image	Digest	Package	Fixed in
matrixdb/custom-external-provisioner :4622a07d7-20220424	7e9ffe249a51	stdlib@go1.17.8	1.25.10
matrixdb/rawfile-csi :v0.2.1	95b2e38e913d	stdlib@go1.17.9	1.25.10
matrixdb/sig-storage_csi-node-driver-registrar :v2.2.0	ba763bb01ddc	stdlib@go1.16	1.25.10
matrixdb/sig-storage_livenessprobe :v2.3.0	7ab06fe3d8a7	stdlib@go1.16	1.25.10

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8,002

nginx-vts-exporterymrs

0.1.2

1 of 1 See more

nginx-vts-exporter ymrs 0.1.2

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

Container image	Digest	Package	Fixed in
sophos/nginx-vts-exporter :latest	f1073556b29b	stdlib@go1.13.6	1.25.10

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1,337

version-checkerymrs

0.2.3

1 of 1 See more

version-checker ymrs 0.2.3

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

Container image	Digest	Package	Fixed in
quay.io/jetstack/version-checker :v0.2.1	5f6f8ba0b671	stdlib@go1.15.2	1.25.10

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3,025

prometheus-monitoring-stackyotron-helm-charts

1.2.0

1 of 3 See more

prometheus-monitoring-stack yotron-helm-charts 1.2.0

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

Container image	Digest	Package	Fixed in
grafana/grafana :latest	f772d434e8fa	stdlib@go1.25.7	1.25.10

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936

zahori-consulzahori

1.0.1

2 of 2 See more

zahori-consul zahori 1.0.1

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

Container image	Digest	Package	Fixed in
hashicorp/consul :1.15.3	ddff34041c5c	stdlib@go1.20.4	1.25.10
hashicorp/consul-k8s-control-plane :1.1.2	62bed1bf8106	stdlib@go1.20.4	1.25.10

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5,077

zahori-moonzahori

1.0.1

3 of 3 See more

zahori-moon zahori 1.0.1

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

Container image	Digest	Package	Fixed in
quay.io/aerokube/moon :2.5.1	a8837b00ba1c	stdlib@go1.20.4	1.25.10
quay.io/aerokube/moon-conf :2.5.1	9ca307b30080	stdlib@go1.20.4	1.25.10
quay.io/aerokube/moon-ui :2.0.5	89990b146824	stdlib@go1.20.5	1.25.10

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2,908

zahori-schedulerzahori

1.0.1

1 of 1 See more

zahori-scheduler zahori 1.0.1

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

Container image	Digest	Package	Fixed in
zahoriaut/zahori-scheduler :1.0.0	47d0979b1184	stdlib@go1.20.5	1.25.10

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2,485

posthogzeet

0.23.2

1 of 9 See more

posthog zeet 0.23.2

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

Container image	Digest	Package	Fixed in
altinity/clickhouse-operator :0.19.0	7a85f522c5bc	stdlib@go1.17.13	1.25.10

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3,700

zookeeper-exporterzookeeper-exporter

0.1.0

1 of 1 See more

zookeeper-exporter zookeeper-exporter 0.1.0

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

Container image	Digest	Package	Fixed in
dabealu/zookeeper-exporter :latest	86106fec315f	stdlib@go1.14.15	1.25.10

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1,248

zoo-project-druzoo-project

0.10.4

1 of 6 See more

zoo-project-dru zoo-project 0.10.4

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

Container image	Digest	Package	Fixed in
library/postgres :18.4-alpine3.24	9a8afca54e78	stdlib@go1.24.6	1.25.10

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7,966

Container images carrying it

4,602 by charts deploying them

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

Container image	Digest	Package	Fixed in	Used by
victoriametrics/vmalert :v1.95.1	a83e5db0897a	stdlib@go1.21.4	1.25.10	2
voltha/voltha-ofagent-go :2.1.6	8feb9ef89e97	stdlib@go1.16.3	1.25.10	2
voltha/voltha-openolt-adapter :4.5.16	d6d79c08350a	stdlib@go1.23.1	1.25.10	2
voltha/voltha-openonu-adapter-go :2.12.25	d8f2eb5f2a7e	stdlib@go1.23.1	1.25.10	2
voltha/voltha-rw-core :3.4.8	7a325316fe59	stdlib@go1.16.3	1.25.10	2
weblate/weblate :4.2.2-1	69c160d37a3c	stdlib@go1.13.5	1.25.10	2
wener/frpc :v0.37.0	cc9fd4da44c0	stdlib@go1.17.3	1.25.10	2
wener/frps :v0.37.0	5c92cc9e8597	stdlib@go1.17.3	1.25.10	2
wolveix/satisfactory-server :latest :v1.9.10	e103700ae6ae	stdlib@go1.18.1	1.25.10	2
xelalex/dregsy :0.4.3	574054e1c417	stdlib@go1.18.3	1.25.10	2
yzhou442/equiz :latest	a3f7ca69e28d	stdlib@go1.16.7	1.25.10	2
zhenghaoz/gorse-master :0.4.12	033046b432ec	stdlib@go1.20.1	1.25.10	2
zhenghaoz/gorse-server :0.4.12	39c565685b01	stdlib@go1.20.1	1.25.10	2
zhenghaoz/gorse-worker :0.4.12	f7739f64c9b0	stdlib@go1.20.1	1.25.10	2
gcr.io/k8s-staging-sig-storage/csi-provisioner :v3.2.1	4ad5fcdbe7e9	stdlib@go1.18	1.25.10	2
gcr.io/k8s-staging-sig-storage/nfs-provisioner :v3.0.0	2de1d15fc1f2	stdlib@go1.15	1.25.10	2
gcr.io/knative-releases/knative.dev/net-istio/cmd/controller	0d5f740b4224	stdlib@go1.24.6	1.25.10	2
gcr.io/knative-releases/knative.dev/net-istio/cmd/webhook	697668be7893	stdlib@go1.24.6	1.25.10	2
gcr.io/knative-releases/knative.dev/serving/cmd/activator	031408ec516f	stdlib@go1.24.3	1.25.10	2
gcr.io/knative-releases/knative.dev/serving/cmd/autoscaler	3502bb5aa60f	stdlib@go1.24.3	1.25.10	2
gcr.io/knative-releases/knative.dev/serving/cmd/autoscaler-hpa	7405faeb7636	stdlib@go1.24.3	1.25.10	2
gcr.io/knative-releases/knative.dev/serving/cmd/controller	5b93308a392c	stdlib@go1.24.3	1.25.10	2
gcr.io/knative-releases/knative.dev/serving/cmd/webhook	50831d9aaa69	stdlib@go1.24.3	1.25.10	2
ghcr.io/akhilrex/podgrab :1.0.0	bce133f3f511	stdlib@go1.15.2	1.25.10	2
ghcr.io/alpineworks/flux-suspension-exporter :v1.0.0	341f0a6cd2b6	stdlib@go1.24.0	1.25.10	2
ghcr.io/appscode/kube-auth-manager :v0.0.1	789692ab9193	stdlib@go1.20.2	1.25.10	2
ghcr.io/appscode/kubectl-nonroot :1.31	83d43cc41590	stdlib@go1.24.9	1.25.10	2
ghcr.io/appscode/kube-rbac-proxy :v0.11.0	0df4ae70e3bd	stdlib@go1.15.14	1.25.10	2
ghcr.io/appscode/service-provider :v0.0.2	f6e481386d70	stdlib@go1.25.5	1.25.10	2
ghcr.io/astriaorg/astria-geth :latest	4249e403225a	stdlib@go1.22.12	1.25.10	2
ghcr.io/banzaicloud/logging-operator :3.17.10	1b530cf7c07f	stdlib@go1.17.13	1.25.10	2
ghcr.io/banzaicloud/tcheck :latest	0147d87c2019	stdlib@go1.15.2	1.25.10	2
ghcr.io/bryopsida/k8s-dev-pod :main	82d0b161161d	stdlib@go1.24.3	1.25.10	2
ghcr.io/buoyantio/prometheus :v2.55.1	2659f4c2ebb7	stdlib@go1.23.2	1.25.10	2
ghcr.io/celestiaorg/celestia-node :v0.27.5-mocha	4768ea1c5fd2	stdlib@go1.24.7	1.25.10	2
ghcr.io/chaos-mesh/chaos-coredns :v0.2.8	38bfdf5e3774	stdlib@go1.25.5	1.25.10	2
ghcr.io/chaos-mesh/chaos-coredns :v0.2.6	78dc63bc5b89	stdlib@go1.19.7	1.25.10	2
ghcr.io/cloudnative-pg/cloudnative-pg :1.25.1	b5210df46c05	stdlib@go1.24.0	1.25.10	2
ghcr.io/containerd/nydus-snapshotter :v0.9.0	56f8617363b4	stdlib@go1.18.10	1.25.10	2
ghcr.io/cosmos/gaia :v25.1.0	f115777d1112	stdlib@go1.24.5	1.25.10	2
ghcr.io/cubed-it/inlets :4.0.0	f02325f099bc	stdlib@go1.13.15	1.25.10	2
ghcr.io/danbooru/danbooru :9cab67c0ac72a8c52289302c519715ceec2372d9	5f545698e907	stdlib@go1.18	1.25.10	2
ghcr.io/danopstech/speedtest_exporter :v0.0.5	99efbe55412b	stdlib@go1.16.6	1.25.10	2
ghcr.io/dellnoantechnp/bitnami/redis :8.4.0	29064423c369	stdlib@go1.25.6	1.25.10	2
ghcr.io/dergeberl/kubeteach :v0.2.3-alpha	cf4428a3c79e	stdlib@go1.19.2	1.25.10	2
ghcr.io/dexidp/dex :v2.28.1	5e88f2205de1	stdlib@go1.16.2	1.25.10	2
ghcr.io/eosc-lot-1/curl-jq :8	156beafae7ca	stdlib@go1.21.10	1.25.10	2
ghcr.io/glassflow/glassflow-etl-k8s-operator :v3.2.1	e70364e88629	stdlib@go1.25.0	1.25.10	2
ghcr.io/google/fleetspeak :v0.1.17	cd264d33efd4	stdlib@go1.22.5	1.25.10	2
ghcr.io/gotify/server :3.1.1	44fc5bbd1c06	stdlib@go1.26.0	1.25.10	2