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Fencer Vulns
medium 5.1

CVE-2026-75838 json

DOMPurify before 3.4.13 Cross-Site Scripting via IN_PLACE hook

published 2026-08-07 3 mo ago modified 2026-10-22 17 d ago also GHSA-55q2-fjhq-7xh7 , EUVD-2026-60602

cvss
5.1
version 4.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 33%
public exploits
0
none known

Summary

DOMPurify before 3.4.13 contains a cross-site scripting vulnerability in IN_PLACE sanitization where element-removal hooks fail to neutralize detached subtrees. Attackers can supply HTML with event handlers on descendant elements that execute after sanitization completes, even though the returned root appears clean.

Patch / fix

  • npm dompurify 3.4.13
  • cure53 DOMPurify 3.4.13
  • node-dompurify Debian 14 3.4.13+dfsg-1

debian advisories DEBIAN-CVE-2026-75838

  • grafana13.2 hummingbird 1 13.2.1-0.7.hum1
  • receptor ansible automation platform 2.6 1.6.8-1.el10ap
  • receptor ansible automation platform inside 2.6, ansible automation platform developer 2.6, ansible automation platform 2.6 1.6.8-1.el9ap
  • python-sqlparse ansible automation platform developer 2.6, ansible automation platform 2.6 0.6.0-1.el10ap
  • python3-sqlparse ansible automation platform developer 2.6, ansible automation platform 2.6 0.6.0-1.el10ap
  • python3.12-sqlparse ansible automation platform developer 2.6, ansible automation platform 2.6 0.6.0-1.el9ap
  • python3.12-gitpython ansible automation platform 2.6 3.1.60-1.el9ap
  • automation-controller ansible automation platform developer 2.6, ansible automation platform 2.6 4.7.17-1.el9ap

red hat advisories RHSA-2026:71906RHSA-2026:71113RHSA-2026:70994RHSA-2026:70917RHSA-2026:67573

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-75838 updated cvss 6.1

dompurify: DOMPurify: Cross-Site Scripting via IN_PLACE sanitization

  • Red Hat Ansible Automation Orchestrator 2026 ansible-automation-platform/automation-orchestrator-ui-rhel9 Red Hat Migration Toolkit for Virtualization migration-toolkit-virtualization/mtv-console-plugin-rhel9
    affected: workaround, no fix available
  • Red Hat Node HealthCheck Operator workload-availability/node-remediation-console-rhel8, workload-availability/node-healthcheck-rhel9-operator, workload-availability/node-healthcheck-operator-bundle, workload-availability/node-healthcheck-must-gather-rhel9, redhat-user-workloads/rhwa-tenant/node-healthcheck-operator/nhc-bundle-0-9, redhat-user-workloads/rhwa-tenant/node-healthcheck-operator/nhc-operator-0-9, +1 more
    affected: workaround, no fix available, no fix planned “Out of support scope”
  • Red Hat Advanced Cluster Management for Kubernetes 2 redhat-user-workloads/crt-redhat-acm-tenant/release-acm-211/console-acm-211
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat AMQ Broker 7 amq-broker-bin.zip 7.14.1.CR2, amq-broker-maven-repository.zip 7.14.1.CR3
    affected: workaround, no fix available
  • Red Hat Ansible Automation Platform 2 automation-controller 4.5.35-1.el9ap
    affected: workaround, no fix planned “Will not fix”
  • Red Hat build of Apache Camel - HawtIO 4 rhaf-hawtio-maven-repository.zip Red Hat build of Apicurio Registry 3 apicurio/apicurio-registry-ui-rhel8, apicurio/apicurio-registry-ui-rhel9, apicurio/apicurio-registry-gitops-sync-rhel9
    affected: workaround, no fix available “Fix deferred”
  • Red Hat Build of Podman Desktop rh-podman-desktop.git 1.1.0
    affected: workaround, no fix available
  • Red Hat Ceph Storage 6 ceph, cephadm, librbd1, librgw2, rbd-nbd, ceph-mib, +16 more Red Hat Ceph Storage 8 ceph, cephadm, librbd1, librgw2, rbd-nbd, ceph-mib, +17 more Red Hat Ceph Storage 9 ceph, cephadm, librbd1, librgw2, rbd-nbd, ceph-mib, +19 more
    affected: workaround, no fix available “Fix deferred”
show 23 more
  • Red Hat Data Grid 8 redhat-datagrid-maven-repository.zip 8.6.1.CR1 Red Hat Developer Hub 1 rhdh/red-hat-developer-hub-backstage-plugin-lightspeed
    affected: workaround, no fix available
  • Red Hat Enterprise Linux 8 grafana, grafana-loki, grafana-mssql, grafana-mysql, grafana-selinux, grafana-graphite, +9 more Red Hat Enterprise Linux 9 grafana, grafana-selinux, grafana 12.4.3-2.el10 Red Hat Enterprise Linux 10 ceph, grafana 12.4.3-2.el10, cockpit-image-builder 110-1.el10
    affected: workaround, no fix available “Fix deferred”
  • Red Hat OpenShift AI (RHOAI) rhoai/odh-core-bff-rhel9, rhoai/odh-dashboard-operator-rhel9, rhoai/odh-mod-arch-agent-ops-rhel9 Red Hat OpenShift Container Platform 4 openshift4/ose-monitoring-plugin-rhel9 Red Hat OpenShift Container Platform 5 openshift5/ose-monitoring-plugin-rhel9
    affected: workaround, no fix available
  • Red Hat Openshift Data Foundation 4 odf4/odf-console-rhel9, odf4/ocs-client-console-rhel9, rhceph-dev/odf4-odf-console-rhel9, odf4/odf-multicluster-console-rhel9, rhceph-dev/odf4-ocs-client-console-rhel9, rhceph-dev/odf4-odf-multicluster-console-rhel9
    affected: workaround, no fix available, no fix planned “Out of support scope”
  • Red Hat OpenShift GitOps microshift-gitops 1.19.2-36.el9, openshift-gitops-1/argocd-rhel8
    affected: workaround, no fix available, no fix planned “Will not fix”
  • Red Hat OpenShift Virtualization 4 container-native-virtualization/kubevirt-console-plugin-rhel9, openshift-virtualization/konflux-builds/v4-18/kubevirt-console-plugin-rhel9
    affected: workaround, no fix available, no fix planned “Out of support scope”
  • Red Hat Cluster Observability Operator 1.5 cluster-observability-operator/distributed-tracing-console-plugin-pf4-rhel9 1793661804, cluster-observability-operator/distributed-tracing-console-plugin-pf4-rhel9 1793823428
    fixed: vendor fix RHSA-2026:95591
  • Red Hat Advanced Cluster Security for Kubernetes 4.11 advanced-cluster-security/rhacs-main-rhel9 1789411320
    fixed: vendor fix RHSA-2026:67714
  • Red Hat Advanced Cluster Security for Kubernetes for IBM Power, little endian 4.10 advanced-cluster-security/rhacs-main-rhel8 1789411269
    fixed: vendor fix RHSA-2026:67711
  • Red Hat Ansible Automation Platform 2.1 ansible-automation-platform/automation-portal 1788775748
    fixed: vendor fix RHSA-2026:65118
  • Red Hat Ansible Automation Platform 2.2 ansible-automation-platform/automation-portal 1788783591
    fixed: vendor fix RHSA-2026:65155
  • Red Hat Ansible Automation Platform 2.6 for RHEL 9 automation-platform-ui 2.6.14-1.el9ap
    fixed: vendor fix RHSA-2026:71113
  • Red Hat Hardened Images grafana13.1 13.1.3-0.9.hum1, grafana13.2 13.2.1-0.6.hum1, grafana13.2 13.2.1-0.7.hum1, grafana12.4 12.4.10-0.7.hum1
    fixed: vendor fix RHSA-2026:70917
  • Red Hat OpenShift AI 2.25 rhoai/odh-dashboard-rhel9 1791853525, rhoai/odh-mod-arch-model-registry-rhel9 1791853432
    fixed: vendor fix RHSA-2026:87410
  • Red Hat OpenShift AI 3.4 rhoai/odh-dashboard-rhel9 1793001801, rhoai/odh-mod-arch-maas-rhel9 1791860708, rhoai/odh-mod-arch-automl-rhel9 1791861032, rhoai/odh-mod-arch-gen-ai-rhel9 1791861479, rhoai/odh-mod-arch-mlflow-rhel9 1791861383, rhoai/odh-mod-arch-autorag-rhel9 1791860994, +2 more
    fixed: vendor fix RHSA-2026:92510
  • Red Hat OpenShift AI 3.5 rhoai/odh-workbench-codeserver-datascience-cpu-py312-rhel9 1791825469
    fixed: vendor fix RHSA-2026:86891
  • Red Hat OpenShift Dev Spaces 3.30 devspaces/openvsx-rhel9 1787759145
    fixed: vendor fix RHSA-2026:62260
  • Red Hat OpenShift Dev Spaces 3.31 devspaces/code-rhel9 1792599388
    fixed: vendor fix RHSA-2026:90321
  • Red Hat OpenShift GitOps 1.20 openshift-gitops-1/argocd-rhel9 1793685630
    fixed: vendor fix RHSA-2026:94581
  • Red Hat OpenShift GitOps 1.21 openshift-gitops-1/argocd-rhel9 1793692411
    fixed: vendor fix RHSA-2026:94583
  • Red Hat OpenShift Service Mesh 3.3 openshift-service-mesh/kiali-rhel9 1789027395, openshift-service-mesh/kiali-ossmc-rhel9 1789050085
    fixed: vendor fix RHSA-2026:68690
  • Red Hat OpenShift Service Mesh 3.4 openshift-service-mesh/kiali-rhel9 1789021319, openshift-service-mesh/kiali-ossmc-rhel9 1789475294
    fixed: vendor fix RHSA-2026:68695
  • Red Hat Cluster Observability Operator 1.5 cluster-observability-operator/perses-rhel9 1793661985, cluster-observability-operator/perses-rhel9 1793825744, cluster-observability-operator/thanos-rhel9 1793660568, cluster-observability-operator/thanos-rhel9 1793821585, cluster-observability-operator/korrel8r-rhel9 1793661297, cluster-observability-operator/korrel8r-rhel9 1793822079, +42 more
    not affected: vulnerable code not present

30 more not affected in the full advisory

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
2 mo ago

Exploit prediction

0.39% chance of exploitation in the next 30 days, higher than 33% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/cure53/DOMPurify/security/advisories/GHSA-55q2-fjhq-7xh7 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 4.0 5.1 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
CNA 4.0 5.1 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected packages

ecosystem package affected fixed in
npm dompurify
<3.4.13
3.4.13

Affected products

  • cure53 DOMPurify

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.