CVE-2026-45409

Medium

Advisory

Published 19 May 2026In the index since 5 Sept 2026

Severity: Medium; worst across findings
CVSS: 5.3; base score, highest
EPSS: 0.004; 34th percentile
CISA KEV: Not listed; no confirmed exploitation
Charts affected: 921; of 17,787 indexed, latest versions
Container images: 979; deployed by those charts
Fix available: 4 of 5; affected packages

Internationalized Domain Names in Applications (IDNA): Specially crafted inputs to idna.encode() can bypass CVE-2024-3651 fix

Carried by container images the latest versions of 921 of 17,787 indexed charts deploy, on 979 images.

Affected package	Affected versions	Fixed in	Images
idnapypi	2.4, 2.5, 2.6, 2.7+15 more	3.15	942
python-pipdeb	1.5.4-1ubuntu4, 8.1.1-2ubuntu0.4, 9.0.1-2.3~ubuntu1, 9.0.1-2.3~ubuntu1.18.04.1+23 more	no fix listed	108
python-idnadeb	2.6-1, 2.8-1, 2.8-1ubuntu0.1, 3.3-1+3 more	3.3-1ubuntu0.2, 3.6-2ubuntu0.2	69
python-idnarpm	2.5-5.el8, 2.5-7.el8_10, 2.10-7.el9, 2.10-7.el9_4.1+1 more	0:2.5-8.el8_10, 0:2.10-8.el9_8, 0:3.7-6.el10_2	64
py3-pipapk	25.0.1-r0, 25.2-r0, 26.0.1-r1	26.1.2-r1	3

OSV records: CGA-9qj9-xwv6-6g35 CGA-jxvh-c6v2-m7x3 DEBIAN-CVE-2026-45409 GHSA-65pc-fj4g-8rjx RHSA-2026:54290 RHSA-2026:54481 RHSA-2026:54484 RLSA-2026:54481 UBUNTU-CVE-2026-45409
Also known as: CGA-gpf6-q7mq-4ppj, CGA-qfx6-f9w7-v6f4, PYSEC-2026-215, USN-8549-1

Charts affected

921 by stars

Chart

Latest

Affected images

Radar Score

kongwallarm

4.6.3

1 of 7 See more

kong wallarm 4.6.3

1 of the 7 container images this version deploys carry CVE-2026-45409.

Container image	Digest	Package	Fixed in
wallarm/ingress-python :4.6.0-1	5cb2ae08b40f	idna@2.6	3.15

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11,444

wallarm-node-nextwallarm

0.5.3

1 of 2 See more

wallarm-node-next wallarm 0.5.3

1 of the 2 container images this version deploys carry CVE-2026-45409.

Container image	Digest	Package	Fixed in
wallarm/node-helpers :5.0.2-1	097cadc42336	idna@3.7	3.15

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2,408

wallarm-oobwallarm

0.23.0

1 of 3 See more

wallarm-oob wallarm 0.23.0

1 of the 3 container images this version deploys carry CVE-2026-45409.

Container image	Digest	Package	Fixed in
wallarm/node-helpers :6.10.1	aecd88b24c51	idna@3.7	3.15

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2,824

wasabi-s3-operatorwasabi-s3-operator

0.2.7

1 of 1 See more

wasabi-s3-operator wasabi-s3-operator 0.2.7

1 of the 1 container images this version deploys carry CVE-2026-45409.

Container image	Digest	Package	Fixed in
kenchrcum/wasabi-s3-operator :0.2.7	ce657c622ce5	idna@3.11	3.15

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629

wazuhwazuh-helm-eks

1.2.10

1 of 6 See more

wazuh wazuh-helm-eks 1.2.10

1 of the 6 container images this version deploys carry CVE-2026-45409.

Container image	Digest	Package	Fixed in
wazuh/wazuh-manager :4.14.4	5a065930682d	idna@3.7	3.15

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5,484

wazuh-manager-filebeatwazuh-manager-filebeat

0.1.0-gamma

1 of 1 See more

wazuh-manager-filebeat wazuh-manager-filebeat 0.1.0-gamma

1 of the 1 container images this version deploys carry CVE-2026-45409.

Container image	Digest	Package	Fixed in
iosifache/wazuh-manager-filebeat :latest	85df3f04b5da	idna@2.9	3.15

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11,167

supersetwbstack

0.1.0

1 of 1 See more

6,540

weather-chartweather-web-app

0.1.0

1 of 1 See more

weather-chart weather-web-app 0.1.0

1 of the 1 container images this version deploys carry CVE-2026-45409.

Container image	Digest	Package	Fixed in
zohardocker12/weather_app_flask :latest	b86d60dbb68d	idna@3.3	3.15

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2,671

ambassadorwenerme

6.9.5

1 of 2 See more

4,086

emissary-ingresswenerme

8.12.2

1 of 2 See more

emissary-ingress wenerme 8.12.2

1 of the 2 container images this version deploys carry CVE-2026-45409.

Container image	Digest	Package	Fixed in
datawire/emissary :3.12.2	1f67a1292d2a	idna@3.7	3.15

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10,857

juicefs-csi-driverwenerme

0.32.5

1 of 5 See more

juicefs-csi-driver wenerme 0.32.5

1 of the 5 container images this version deploys carry CVE-2026-45409.

Container image	Digest	Package	Fixed in
juicedata/juicefs-csi-driver :v0.32.5	95008ba63318	idna@3.3 python-idna@3.3-1+deb12u1	3.15 no fix listed

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8,824

ceph-csi-cephfswikimedia

0.1.8

1 of 5 See more

ceph-csi-cephfs wikimedia 0.1.8

1 of the 5 container images this version deploys carry CVE-2026-45409.

Container image	Digest	Package	Fixed in
quay.io/cephcsi/cephcsi :v3.7.2	f7f8228f17cc	idna@2.5	3.15

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10,286

ceph-csi-rbdwikimedia

0.1.13

1 of 6 See more

ceph-csi-rbd wikimedia 0.1.13

1 of the 6 container images this version deploys carry CVE-2026-45409.

Container image	Digest	Package	Fixed in
quay.io/cephcsi/cephcsi :v3.7.2	f7f8228f17cc	idna@2.5	3.15

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11,785

docker-hub-rate-limit-exporterwiremind

0.3.0

1 of 1 See more

docker-hub-rate-limit-exporter wiremind 0.3.0

1 of the 1 container images this version deploys carry CVE-2026-45409.

Container image	Digest	Package	Fixed in
viadee/docker-hub-rate-limit-exporter :version-1.5	2e27e3b3ee56	idna@2.10	3.15

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1,843

marge-botwiremind

1.4.4

1 of 1 See more

marge-bot wiremind 1.4.4

1 of the 1 container images this version deploys carry CVE-2026-45409.

Container image	Digest	Package	Fixed in
hiboxsystems/marge-bot :0.14.0	dcffb926e563	idna@3.4	3.15

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5,548

powerdnsadminwitcom-gmbh

0.3.4

1 of 1 See more

powerdnsadmin witcom-gmbh 0.3.4

1 of the 1 container images this version deploys carry CVE-2026-45409.

Container image	Digest	Package	Fixed in
ngoduykhanh/powerdns-admin :v0.2.4	ba36ab196d3d	idna@2.10	3.15

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2,643

xkopsxkops

0.1.0

2 of 5 See more

xkops xkops 0.1.0

2 of the 5 container images this version deploys carry CVE-2026-45409.

Container image	Digest	Package	Fixed in
hamzaarshad10/querybackend :1.6.2	2c1c3b86a8e7	idna@3.10	3.15
hamzaarshad10/querypodpy :1.7	154f38e8668e	idna@3.10	3.15

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13,197

enterprise-gatewayzeet

3.2.2

1 of 2 See more

enterprise-gateway zeet 3.2.2

1 of the 2 container images this version deploys carry CVE-2026-45409.

Container image	Digest	Package	Fixed in
elyra/kernel-image-puller :3.2.2	c922f1f1646a	idna@3.4	3.15

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1,838

zerossl-cert-managerzerossl-cert-manager

0.1.0

1 of 2 See more

zerossl-cert-manager zerossl-cert-manager 0.1.0

1 of the 2 container images this version deploys carry CVE-2026-45409.

Container image	Digest	Package	Fixed in
andreymileshin/zerossl-issuer :v1.0.0	e0825acc9e48	idna@3.10	3.15

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569

alertmanager-matrix-forwarderzloi-space

1.0.1

1 of 2 See more

alertmanager-matrix-forwarder zloi-space 1.0.1

1 of the 2 container images this version deploys carry CVE-2026-45409.

Container image	Digest	Package	Fixed in
matrixdotorg/pantalaimon :v0.10.4	ba6a587fa508	idna@3.3	3.15

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3,118

grafana-matrix-forwarderzloi-space

1.0.0

1 of 2 See more

grafana-matrix-forwarder zloi-space 1.0.0

1 of the 2 container images this version deploys carry CVE-2026-45409.

Container image	Digest	Package	Fixed in
matrixdotorg/pantalaimon :v0.10.4	ba6a587fa508	idna@3.3	3.15

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1,636

Container images carrying it

979 by charts deploying them

A fixed version is listed for 4 of the 5 affected packages.

Container image	Digest	Package	Fixed in	Used by
ghcr.io/ctfd/ctfd :3.8.2	870e396fddf8	idna@3.10	3.15	1
ghcr.io/ctron/streamsheets-base :2.4.0	0cf25ed621e2	idna@2.5 python-idna@2.5-5.el8	3.15 0:2.5-8.el8_10	1
ghcr.io/ctron/streamsheets-gateway :2.4.0	0635f17c9d2c	idna@2.5 python-idna@2.5-5.el8	3.15 0:2.5-8.el8_10	1
ghcr.io/ctron/streamsheets-service-graphs :2.4.0	e34964e336c1	idna@2.5 python-idna@2.5-5.el8	3.15 0:2.5-8.el8_10	1
ghcr.io/ctron/streamsheets-service-machines :2.4.0	0c5a3398d1e4	idna@2.5 python-idna@2.5-5.el8	3.15 0:2.5-8.el8_10	1
ghcr.io/ctron/streamsheets-service-streams :2.4.0	8ba040e79ca0	idna@2.5 python-idna@2.5-5.el8	3.15 0:2.5-8.el8_10	1
ghcr.io/cunningpike/fediblockhole :0.4.2	2abc5f0350dc	idna@3.4	3.15	1
ghcr.io/danielgines/brightdata-exporter :0.2.17	6920d17cf6ff	idna@3.13	3.15	1
ghcr.io/dask/dask :2024.1.0	080150de7d86	idna@3.4	3.15	1
ghcr.io/dask/dask-gateway-server :2024.1.0	881e7acfc5a0	idna@3.6	3.15	1
ghcr.io/dask/dask-gateway-server :2026.3.0	afa5a729114e	idna@3.11	3.15	1
ghcr.io/dask/dask-kubernetes-operator :2026.3.0	3225d2bc6b3c	idna@3.11	3.15	1
ghcr.io/dask/dask-notebook :2024.1.0	f53bde3acd4f	idna@3.6	3.15	1
ghcr.io/developmentseed/titiler :0.22.4	8ac53eb38393	idna@3.10	3.15	1
ghcr.io/dfir-iris/iriswebapp_app :v2.4.26	e59ebde55709	idna@3.3	3.15	1
ghcr.io/dgtlmoon/changedetection.io :0.39.4	f1ce4c56ccaa	idna@3.3	3.15	1
ghcr.io/djerfy/zabbix-kubernetes-discovery :v1.4.20	7a50c07e7c69	idna@3.10 python-pip@24.0+dfsg-1ubuntu1.1	3.15 no fix listed	1
ghcr.io/dmunozv04/isponsorblocktv :v2.9.0	5b8cfa805cb6	idna@3.13	3.15	1
ghcr.io/dodevops/azure-advanced-backup :0.4.0	1041d4449e49	idna@2.8	3.15	1
ghcr.io/dodevops/azure-app-exporter/azure-app-exporter :0.1.38	b472877847f5	idna@3.7	3.15	1
ghcr.io/drewburr-labs/mum-discord-bot :3.1.2	6e82914e1051	idna@3.6	3.15	1
ghcr.io/dynamia-ai/hami-enterprise :v2.10.0-r0-openshift.c4e22e88	745504757300	idna@2.5	3.15	1
ghcr.io/element-hq/synapse :v1.111.0	22ae556e0de4	idna@3.7	3.15	1
ghcr.io/esphome/esphome :2026.4.0	78a82d810709	idna@3.11	3.15	1
ghcr.io/facebook/threatexchange/hma :1.0.17	84d09c6b75a7	idna@3.10	3.15	1
ghcr.io/flaresolverr/flaresolverr :v3.3.16	088412db1051	idna@3.6	3.15	1
ghcr.io/flaresolverr/flaresolverr :v3.4.0	ab535d1fef5d	idna@3.10	3.15	1
ghcr.io/flaresolverr/flaresolverr :v3.3.21	f104ee51e512	idna@3.7	3.15	1
ghcr.io/gabe565/obico/web :latest	a5c1daef46c0	idna@3.10	3.15	1
ghcr.io/goauthentik/server :2026.2.1	46a71d75dfd3	idna@3.11	3.15	1
ghcr.io/goauthentik/server :2026.5.6	ed120caf710c	idna@3.13	3.15	1
ghcr.io/grofers/legend :0.1	d6e901ad0ebd	idna@2.8	3.15	1
ghcr.io/grycap/im :latest	06a16d4f279f	idna@3.10	3.15	1
ghcr.io/haveagitgat/tdarr :2.00.18.2	3fbe4c29d14c	idna@2.8 python-idna@2.8-1	3.15 no fix listed	1
ghcr.io/hemslo/chat-search :latest	39d48995a5bd	idna@3.7	3.15	1
ghcr.io/home-assistant/home-assistant :2025.3.0	26c51e44d932	idna@3.10	3.15	1
ghcr.io/home-assistant/home-assistant :2025.12.5	9a5a3eb4a213	idna@3.11	3.15	1
ghcr.io/home-assistant/home-assistant :2022.5.4	ec6d67fbedfa	idna@3.3	3.15	1
ghcr.io/home-assistant/home-assistant :2023.11.3	feffc0b8227d	idna@3.4	3.15	1
ghcr.io/home-operations/bazarr :1.5.6	80cb090162b4	idna@3.10	3.15	1
ghcr.io/home-operations/beets :2.3.1	cc4975f1a0be	idna@3.10	3.15	1
ghcr.io/home-operations/home-assistant :2026.3.1	067e54e2e107	idna@3.11	3.15	1
ghcr.io/hoverkraft-tech/ovh-snapshoter/app :0.4.10	10d271f08ab3	idna@3.7	3.15	1
ghcr.io/htunn/ansible-inspec :0.2.12	cd25a5cc3f1b	idna@3.11	3.15	1
ghcr.io/ideamixes/object-cloner :2.0.0	31030fd2f192	idna@3.4	3.15	1
ghcr.io/iisas/domino-rest :latest	3009350bfc11	idna@3.11	3.15	1
ghcr.io/immich-app/immich-machine-learning :v2.3.1	379e31b8c751	idna@3.6	3.15	1
ghcr.io/immich-app/immich-machine-learning :v3.1.0	5a0839dc5303	idna@3.11	3.15	1
ghcr.io/it-at-m/wjh-rechner :1.0.0	bc70cdb5a01a	idna@2.10 python-idna@2.10-7.el9	3.15 0:2.10-8.el9_8	1
ghcr.io/jaydee94/kubeseal-webgui/api :4.5.3	3cceb9462ae1	idna@3.10	3.15	1