BlackTreeIndependent security intelligence

Full vulnerability report · 2026

CVE-2026-49458High confidence

DOMPurify: Cross-realm IN_PLACE sanitization leaves executable markup intact via realm-bound `instanceof` checks

cure53 · DOMPurify

6.1MediumCVSS 3.1

Recommended action

Within 7 days

Medium technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance.

Patch available

Distribution package intelligence

Ubuntu vendor package status

Canonical’s release and source-package findings are shown separately from local repository availability.

1 package state

Repository candidate not checked

A published vendor fix does not prove that a matching update is enabled and installable on a particular asset. Confirm the local package candidate before scheduling remediation.

Ubuntu release	Source package	Vendor state	Fixed version	Evidence
Ubuntu 24.04 LTSnoble · standard archive	`node-dompurify`	Under evaluationCanonical reports that the package might be affected and still needs evaluation or fixing.	`Not published in this feed`	Canonical record ↗Source updated 9 Sept 2026

Direct vendor intelligence

Authoritative vendor CSAF and VEX advisories

Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.

1 current

CVE-2026-49458 · CSAF 2.0 · revision 3 · finalRed Hat Product Securitydompurify: DOMPurify: Cross-site scripting due to improper sanitization of DOM nodes

47 known affected

The vendor explicitly identifies these products as affected by this CVE.

migration-toolkit-virtualization/mtv-console-plugin-rhel9 as a component of Migration Toolkit for Virtualization
mtv-candidate/mtv-console-plugin-rhel9 as a component of Migration Toolkit for Virtualization
multicluster-engine/console-mce-rhel9 as a component of Multicluster Engine for Kubernetes
workload-availability/node-healthcheck-must-gather-rhel9 as a component of Node HealthCheck Operator
workload-availability/node-healthcheck-operator-bundle as a component of Node HealthCheck Operator
workload-availability/node-healthcheck-rhel9-operator as a component of Node HealthCheck Operator
openshift-lightspeed/lightspeed-agentic-console-rhel9 as a component of OpenShift Lightspeed
openshift-lightspeed/lightspeed-console-plugin-419-rhel9 as a component of OpenShift Lightspeed
openshift-lightspeed/lightspeed-console-plugin-pf5-rhel9 as a component of OpenShift Lightspeed
openshift-lightspeed/lightspeed-console-plugin-rhel9 as a component of OpenShift Lightspeed
openshift-service-mesh/kiali-ossmc-rhel9 as a component of OpenShift Service Mesh 3
openshift-service-mesh/kiali-rhel9 as a component of OpenShift Service Mesh 3

Summary: A flaw was found in DOMPurify, a tool designed to prevent cross-site scripting (XSS) attacks by sanitizing HTML, MathML, and SVG content. When processing certain types of web page elements, DOMPurify failed to properly identify and sanitize malicious code. This oversight could allow an attacker to inject and execute harmful scripts within a user's web browser, potentially leading to information disclosure or unauthorized actions.
Remediation: Fix deferred

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current

ENISA EUVD identifier

EUVD-2026-44507

No EUVD known-exploited evidence

ENISA has published the identifier mapping but no EUVD description has been stored yet.

EUVD state: Present in the current official mapping
Known exploitation: Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score: Not supplied in the stored EUVD record
Advisory evidence: No linked advisory details stored yet

Recommended actionWithin 7 days

Medium technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance.

Patch available

What, why and how

DOMPurify is a DOM-only cross-site scripting sanitizer for HTML, MathML, and SVG. Prior to 3.4.6, DOMPurify.sanitize(node, { IN_PLACE: true }) accepted same-origin foreign-realm DOM nodes while follow-on checks used parent-realm constructors, causing instanceof checks for forms, named node maps, document fragments, and elements to fail and skip clobber, template-content, and shadow-DOM sanitization branches so executable markup could survive. This issue is fixed in version 3.4.6.

What

Why

Attacker-controlled content can reach a browser as executable script without sufficient output encoding or sanitisation.

How

An attacker operating through a network path may attempt exploitation without authentication after a user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

Why

Attacker-controlled content can reach a browser as executable script without sufficient output encoding or sanitisation.

How

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation

Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.

No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material

Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.

Reference recorded

A structured CVE source labels at least one public reference as exploit material. BlackTree has not independently validated that it is safe, reliable or weaponised.

Likely attack path: a network path → Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface: Network
Privileges required: None: unauthenticated exploitation is possible
User interaction: Required interaction required
Attack complexity: Low: no specialised conditions are recorded
Security boundary: Changed: exploitation can affect a different security authority
Weakness ? CWE means Common Weakness Enumeration: a standard category for the underlying weakness.: CWE-79 ↗
CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'). The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
CVSS vector ? CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.
AVNetworkAttack vector: The vulnerable component can be reached over a network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRNonePrivileges required: The attacker does not need an account or existing privileges.UIRequiredUser interaction: Another user must perform an action for exploitation to succeed.SChangedScope: The attack can affect a component governed by a different security authority.CLowConfidentiality impact: A successful attack can cause a limited loss.ILowIntegrity impact: A successful attack can cause a limited loss.ANoneAvailability impact: No direct loss is represented by this metric.
Post-exploitation / living off the land: No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.

NetworkUnauthenticatedCWE-79Public exploit reference

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

ENISA EUVD · EUVD-2026-44507Official EUVD mapping

0 linked advisory records.

Official EUVD record

CERT-FR · French · CERTFR-2026-AVI-1094Multiples vulnérabilités dans les produits IBM

ord?id=CVE-2026-48779 Référence CVE CVE-2026-4878 https://www.cve.org/CVERecord?id=CVE-2026-4878 Référence CVE CVE-2026-48801 https://www.cve.org/CVERecord?id=CVE-2026-48801 Référence CVE CVE-2026-48864 https://www.cve.org/CVERecord?id=CVE-2026-48864 Référence CVE CVE-2026-48988 https://www.cve.org/CVERecord?id=CVE-2026-48988 Référence CVE CVE-2026-49157 https://www.cve.org/CVERecord?id=CVE-2026-49157 Référence CVE CVE-2026-49270 https://www.cve.org/CVERecord?id=CVE-2026-49270 Référence CVE CVE-2026-49432 https://www.cve.org/CVERecord?id=CVE-2026-49432 Référence CVE CVE-2026-49434 https://www.cve.org/CVERecord?id=CVE-2026-49434 Référence CVE CVE-2026-49458 https://www.cve.org/CVERecord?id=CVE-2026-49458 Référence CVE CVE-2026-49459 https://www.cve.org/CVERecord?id=CVE-2026-49459 Référence CVE CVE-2026-49476 https://www.cve.org/CVERecord?id=CVE-2026-49476 Référence CVE CVE-2026-49477 https://www.cve.org/CVERecord?id=CVE-2026-49477 Référence CVE CVE-2026-49844 https://www.cve.org/CVERecord?id=CVE-2026-49844 Référence CVE CVE-2026-49978 https://www.cve.org/CVERecord?id=CVE-2026-49978 Référence CVE CVE-2026-5038 https://www.cve.org/CVERecord?id=CVE-2026-5038 Référence CVE CVE-2026-50645 https://www.cve.org/CVERecord?id=CVE-2026-50645 Référence CVE CVE-2026-50721 https://www.cve.org/CVERecord?id=CV

Official advisory

CERT-FR · French · CERTFR-2026-AVI-1049Multiples vulnérabilités dans Oracle MySQL

rd?id=CVE-2026-0968 Référence CVE CVE-2026-34477 https://www.cve.org/CVERecord?id=CVE-2026-34477 Référence CVE CVE-2026-34478 https://www.cve.org/CVERecord?id=CVE-2026-34478 Référence CVE CVE-2026-34479 https://www.cve.org/CVERecord?id=CVE-2026-34479 Référence CVE CVE-2026-34480 https://www.cve.org/CVERecord?id=CVE-2026-34480 Référence CVE CVE-2026-34481 https://www.cve.org/CVERecord?id=CVE-2026-34481 Référence CVE CVE-2026-41238 https://www.cve.org/CVERecord?id=CVE-2026-41238 Référence CVE CVE-2026-41239 https://www.cve.org/CVERecord?id=CVE-2026-41239 Référence CVE CVE-2026-41240 https://www.cve.org/CVERecord?id=CVE-2026-41240 Référence CVE CVE-2026-49458 https://www.cve.org/CVERecord?id=CVE-2026-49458 Référence CVE CVE-2026-49459 https://www.cve.org/CVERecord?id=CVE-2026-49459 Référence CVE CVE-2026-49978 https://www.cve.org/CVERecord?id=CVE-2026-49978 Référence CVE CVE-2026-60592 https://www.cve.org/CVERecord?id=CVE-2026-60592 Référence CVE CVE-2026-65898 https://www.cve.org/CVERecord?id=CVE-2026-65898 Référence CVE CVE-2026-65899 https://www.cve.org/CVERecord?id=CVE-2026-65899 Référence CVE CVE-2026-65900 https://www.cve.org/CVERecord?id=CVE-2026-65900 Référence CVE CVE-2026-65901 https://www.cve.org/CVERecord?id=CVE-2026-65901 Référence CVE CVE-2026-65902 https://www.cve.org/CVERecord?id=

Official advisory

Patch and workaround

Operational remediation based on structured source evidence.

Status ? Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.: Patch available
Affected: migration-toolkit-virtualization/mtv-console-plugin-rhel9 as a component of Migration Toolkit for Virtualization; mtv-candidate/mtv-console-plugin-rhel9 as a component of Migration Toolkit for Virtualization; multicluster-engine/console-mce-rhel9 as a component of Multicluster Engine for Kubernetes; workload-availability/node-healthcheck-must-gather-rhel9 as a component of Node HealthCheck Operator; workload-availability/node-healthcheck-operator-bundle as a component of Node HealthCheck Operator; workload-availability/node-healthcheck-rhel9-operator as a component of Node HealthCheck Operator; openshift-lightspeed/lightspeed-agentic-console-rhel9 as a component of OpenShift Lightspeed; openshift-lightspeed/lightspeed-console-plugin-419-rhel9 as a component of OpenShift Lightspeed; openshift-lightspeed/lightspeed-console-plugin-pf5-rhel9 as a component of OpenShift Lightspeed; openshift-lightspeed/lightspeed-console-plugin-rhel9 as a component of OpenShift Lightspeed; openshift-service-mesh/kiali-ossmc-rhel9 as a component of OpenShift Service Mesh 3; openshift-service-mesh/kiali-rhel9 as a component of OpenShift Service Mesh 3; rhacm2/console-rhel9 as a component of Red Hat Advanced Cluster Management for Kubernetes 2; advanced-cluster-security/rhacs-main-rhel8 as a component of Red Hat Advanced Cluster Security 4; advanced-cluster-security/rhacs-main-rhel9 as a component of Red Hat Advanced Cluster Security 4; dompurify as a component of Red Hat AMQ Broker 7; ansible-automation-platform-26/gateway-rhel9 as a component of Red Hat Ansible Automation Platform 2; ansible-automation-platform-27/gateway-rhel9 as a component of Red Hat Ansible Automation Platform 2; dompurify as a component of Red Hat build of Apache Camel for Spring Boot 4; rh-podman-desktop.git as a component of Red Hat Build of Podman Desktop; rhceph/alloy-rhel10 as a component of Red Hat Ceph Storage 9; dompurify as a component of Red Hat Data Grid 8; rhdh/rhdh-hub-rhel9 as a component of Red Hat Developer Hub; rhoai/odh-dashboard-rhel9 as a component of Red Hat OpenShift AI (RHOAI); rhoai/odh-mod-arch-automl-rhel9 as a component of Red Hat OpenShift AI (RHOAI); rhoai/odh-mod-arch-autorag-rhel9 as a component of Red Hat OpenShift AI (RHOAI); rhoai/odh-mod-arch-eval-hub-rhel9 as a component of Red Hat OpenShift AI (RHOAI); rhoai/odh-mod-arch-gen-ai-rhel9 as a component of Red Hat OpenShift AI (RHOAI); rhoai/odh-mod-arch-maas-rhel9 as a component of Red Hat OpenShift AI (RHOAI); rhoai/odh-mod-arch-mlflow-rhel9 as a component of Red Hat OpenShift AI (RHOAI); and 17 more
Fixed: 3.4.6.
Action: Review the linked authoritative reference and apply the recorded fixed release appropriate to the affected product branch.
Workaround: A mitigation or workaround reference is available from the source linked below; validate it against the affected product and version.

Evidence and provenance

Published 14 Jul 2026 · Last source change 15 Jul 2026, 13:03 UTC · CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVE recordCVE.org · 5.2

CVSS sourceCNA

EPSS source

The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.

FIRST · tracked since 2026-08-14

European sourceENISA EUVD · EUVD-2026-44507

Product sourceVendor CSAF · Red Hat Product Security

Remediation sourceVendor CSAF · Red Hat Product Security

CWE sourceCNA

NVD statusNVD enriched

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates →

No material field changes have been recorded since change tracking began. Routine source refreshes and cosmetic edits are intentionally excluded.

2026-07-14CVE published

2026-07-15Fixed release or patch reference recorded

ENISA EUVD · EUVD-2026-44507↗Vendor CSAF · Red Hat Product Security↗CISA Vulnrichment SSVC evidence↗Public exploit reference↗Patch or update reference↗Official CVE record (CNA and ADP data)↗NVD record↗

Technical terms and abbreviations used in this report

CVE: Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS: Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS: Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE: Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA: CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP: Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD: National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT: A computer security incident response team that publishes warnings or coordinates incident response.
PoC: Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF: Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL: Living off the land: abuse of legitimate tools or system functions during an attack.