StackRadar

CVE-2026-21860

Medium

Advisory

Published 8 Jan 2026In the index since 5 Sept 2026
Severity
Medium
worst across findings
CVSS
5.3
base score, highest
EPSS
0.005
40th percentile
CISA KEV
Not listed
no confirmed exploitation
Charts affected
306
of 17,787 indexed, latest versions
Container images
302
deployed by those charts
Fix available
1 of 1
affected package

Werkzeug safe_join() allows Windows special device names with compound extensions

Carried by container images the latest versions of 306 of 17,787 indexed charts deploy, on 302 images.

Affected packageAffected versionsFixed inImages
werkzeugpypi0.9.1, 0.11.15, 0.12.2, 0.13+33 more3.1.5302
OSV records
GHSA-87hc-h4r5-73f7
Also known as
PYSEC-2026-2044

Charts affected

306 by stars
ChartLatestAffected imagesRadar Score
emissary-ingresswenerme8.12.21 of 2See more

emissary-ingress wenerme 8.12.2

1 of the 2 container images this version deploys carry CVE-2026-21860.

Container imageDigestPackageFixed in
datawire/emissary:3.12.21f67a1292d2a
werkzeug@3.0.3
3.1.5

Open the chart page →

10,843
ceph-csi-cephfswikimedia0.1.81 of 5See more

ceph-csi-cephfs wikimedia 0.1.8

1 of the 5 container images this version deploys carry CVE-2026-21860.

Container imageDigestPackageFixed in
quay.io/cephcsi/cephcsi:v3.7.2f7f8228f17cc
werkzeug@0.12.2
3.1.5

Open the chart page →

10,285
ceph-csi-rbdwikimedia0.1.131 of 6See more

ceph-csi-rbd wikimedia 0.1.13

1 of the 6 container images this version deploys carry CVE-2026-21860.

Container imageDigestPackageFixed in
quay.io/cephcsi/cephcsi:v3.7.2f7f8228f17cc
werkzeug@0.12.2
3.1.5

Open the chart page →

11,784
powerdnsadminwitcom-gmbh0.3.41 of 1See more

powerdnsadmin witcom-gmbh 0.3.4

1 of the 1 container images this version deploys carry CVE-2026-21860.

Container imageDigestPackageFixed in
ngoduykhanh/powerdns-admin:v0.2.4ba36ab196d3d
werkzeug@2.0.2
3.1.5

Open the chart page →

2,643
xkopsxkops0.1.01 of 5See more

xkops xkops 0.1.0

1 of the 5 container images this version deploys carry CVE-2026-21860.

Container imageDigestPackageFixed in
hamzaarshad10/querybackend:1.6.22c1c3b86a8e7
werkzeug@3.0.4
3.1.5

Open the chart page →

13,677
zerossl-cert-managerzerossl-cert-manager0.1.01 of 2See more

zerossl-cert-manager zerossl-cert-manager 0.1.0

1 of the 2 container images this version deploys carry CVE-2026-21860.

Container imageDigestPackageFixed in
andreymileshin/zerossl-issuer:v1.0.0e0825acc9e48
werkzeug@3.1.3
3.1.5

Open the chart page →

570

Container images carrying it

302 by charts deploying them

A fixed version is listed for 1 of the 1 affected package.

Container imageDigestPackageFixed inUsed by
wazuh/wazuh-manager:4.11.11da5c38c6a78
werkzeug@3.0.3
3.1.5
1
wazuh/wazuh-manager:4.4.121994f40e0da
werkzeug@2.2.3
3.1.5
1
wazuh/wazuh-manager:4.14.3f09282d281f6
werkzeug@3.1.4
3.1.5
1
youssef11gaber10/deployment-weather-flask:latest96bce8b8b5a7
werkzeug@3.0.6
3.1.5
1
yuzutech/kroki-blockdiag:0.16.07c1917c66d96
werkzeug@2.0.2
3.1.5
1
zohardocker12/weather_app_flask:latestb86d60dbb68d
werkzeug@2.0.3
3.1.5
1
gcr.io/getindata-images-public/mlflow:latest25d6975951f1
werkzeug@3.0.2
3.1.5
1
gcr.io/google-samples/microservices-demo/loadgenerator:v0.2.3360130ab5850
werkzeug@1.0.1
3.1.5
1
gcr.io/kubecost1/kubecost-modeling:v0.1.24a2259b098b13
werkzeug@3.1.3
3.1.5
1
gcr.io/kubecost1/kubecost-modeling:v0.1.22a461dc5cb96a
werkzeug@3.1.3
3.1.5
1
ghcr.io/bensoer/external-secrets-reloader:v0.1.38e31b5a81853
werkzeug@3.1.3
3.1.5
1
ghcr.io/bensoer/sibyl:v0.2.06dca4455fde3
werkzeug@3.1.4
3.1.5
1
ghcr.io/blakeblackshear/frigate:0.14.122e3d0b486df
werkzeug@3.0.3
3.1.5
1
ghcr.io/blakeblackshear/frigate:0.13.07a5244e4c8dc
werkzeug@3.0.1
3.1.5
1
ghcr.io/blakeblackshear/frigate:0.12.0c862771e38e8
werkzeug@2.2.3
3.1.5
1
ghcr.io/camptocamp/tetragon-policy-builder:master0e99f12bb040
werkzeug@3.1.3
3.1.5
1
ghcr.io/cfi2017/opencve-scheduler:3.0.08d943799621b
werkzeug@2.2.3
3.1.5
1
ghcr.io/ctfd/ctfd:3.8.2870e396fddf8
werkzeug@2.2.3
3.1.5
1
ghcr.io/dfir-iris/iriswebapp_app:v2.4.26e59ebde55709
werkzeug@2.3.7
3.1.5
1
ghcr.io/dgtlmoon/changedetection.io:0.39.4f1ce4c56ccaa
werkzeug@1.0.1
3.1.5
1
ghcr.io/facebook/threatexchange/hma:1.0.1784d09c6b75a7
werkzeug@3.1.3
3.1.5
1
ghcr.io/grycap/im:latest06a16d4f279f
werkzeug@3.1.3
3.1.5
1
ghcr.io/home-assistant/home-assistant:2025.3.026c51e44d932
werkzeug@3.1.3
3.1.5
1
ghcr.io/home-assistant/home-assistant:2025.12.59a5a3eb4a213
werkzeug@3.1.4
3.1.5
1
ghcr.io/home-assistant/home-assistant:2022.5.4ec6d67fbedfa
werkzeug@2.1.2
3.1.5
1
ghcr.io/home-assistant/home-assistant:2023.11.3feffc0b8227d
werkzeug@3.0.1
3.1.5
1
ghcr.io/home-operations/bazarr:1.5.680cb090162b4
werkzeug@3.0.6
3.1.5
1
ghcr.io/home-operations/beets:2.3.1cc4975f1a0be
werkzeug@3.1.3
3.1.5
1
ghcr.io/liturgical-app/calendar-api:0.0.9688a685e2bde
werkzeug@3.1.3
3.1.5
1
ghcr.io/liturgical-app/liturgical-app:1.2.041f25aded572
werkzeug@3.1.3
3.1.5
1
ghcr.io/miguelndecarvalho/speedtest-exporter:v3.2.29e36964bce26
werkzeug@2.0.1
3.1.5
1
ghcr.io/mirio/verbacap:v1.5.084928e2fc4f2
werkzeug@3.0.2
3.1.5
1
ghcr.io/mlops-for-all/mlflow-tracking-server:3.8-1.30.1-v1.0.0d30e631684c3
werkzeug@2.3.6
3.1.5
1
ghcr.io/mshade/kronic:v0.1.466e3043851cd
werkzeug@3.0.1
3.1.5
1
ghcr.io/noahburrell0/sealed-secrets-ui:v0.1.47e7368fb472d
werkzeug@2.2.3
3.1.5
1
ghcr.io/open-telemetry/demo:1.12.0-loadgenerator85c9935ff31b
werkzeug@3.0.1
3.1.5
1
ghcr.io/remla23-team17/app:1.0.05816dbddf47d
werkzeug@2.3.4
3.1.5
1
ghcr.io/remla23-team17/model-service:1.0.0aa59fe2c4f6a
werkzeug@2.3.4
3.1.5
1
ghcr.io/smarter-project/image-detector:v2.5.31dcca70c6446
werkzeug@0.16.1
3.1.5
1
ghcr.io/sudo-kraken/3d-printing-cost-calculators:v1.1.1220c5e4e1a3d
werkzeug@3.1.3
3.1.5
1
ghcr.io/sudo-kraken/authentik-webfinger-proxy:v1.1.1e1351a977607
werkzeug@3.1.3
3.1.5
1
ghcr.io/sudo-kraken/fantasy-dice-chamber:v1.3.299fd4cb0f4fe
werkzeug@3.1.3
3.1.5
1
ghcr.io/sudo-kraken/finances-tracker:v1.1.1c73527cde81c
werkzeug@3.1.3
3.1.5
1
ghcr.io/sudo-kraken/jf-pushover-webhook:v1.1.0ee9cf22a39ab
werkzeug@3.1.3
3.1.5
1
ghcr.io/wasi-master/13ft:0.3.4563ce7794a71
werkzeug@3.0.6
3.1.5
1
ghcr.io/wizarrrr/wizarr:4.2.0-beta.3d19d886d5090
werkzeug@3.0.3
3.1.5
1
quay.io/ceph/ceph:v21.1.05ff3692d2f3f
werkzeug@3.1.3
3.1.5
1
quay.io/cloudnativetoolkit/cloud-pak-deployer:latest13aaae779248
werkzeug@2.3.7
3.1.5
1
quay.io/maxiv/storageclass-router:0.4.160725dab588c
werkzeug@3.0.1
3.1.5
1
quay.io/opsmxpublic/ubi8-oes-datascience:isd-spin-2025.10.01-af26a30d4-202511261054d8f66f4117fe
werkzeug@3.1.0
3.1.5
1

syft 1.42.1 · advisories as of 14 Sept 2026

Corrections: contact@stackradar.io

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