CVE-2026-6732: Libxml2: libxml2: denial of service via crafted xsd-validated document

Published Apr 23, 2026
·
Updated

A flaw was found in libxml2. This vulnerability occurs when the library processes a specially crafted XML Schema Definition (XSD) validated document that includes an internal entity reference. An attacker could exploit this by providing a malicious document, leading to a type confusion error that causes the application to crash. This results in a denial of service (DoS), making the affected system or application unavailable.

Affected Software

10 affected components
Gnome libxml2
Xmlsoft Libxml2>=2.13.0<2.15.3
redhat Hardened Images
redhat JBoss Core Services
redhat OpenShift Container Platform=4.0
redhat Enterprise Linux=6.0
redhat Enterprise Linux=7.0
redhat Enterprise Linux=8.0
redhat Enterprise Linux=9.0
redhat Enterprise Linux=10.0

Event History

Apr 23, 2026
Data Sourced
via Red Hat·10:09 PM
DescriptionSeverityAffected Software
CVE Published
via MITRE·10:19 PM
Data Sourced
via MITRE·10:19 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·11:16 PM
DescriptionSeverityWeaknessAffected Software
Dec 24, 58314
Event
via FIRST·04:47 AM
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Frequently Asked Questions

1

What is the severity of CVE-2026-6732?

The severity of CVE-2026-6732 is rated as high due to its potential to cause a denial of service.

2

How do I fix CVE-2026-6732?

To fix CVE-2026-6732, update to the latest version of libxml2 that addresses this vulnerability.

3

Who is affected by CVE-2026-6732?

CVE-2026-6732 affects applications that utilize the libxml2 library for processing XSD-validated documents.

4

What impact does CVE-2026-6732 have on systems?

CVE-2026-6732 can lead to denial of service, rendering applications that rely on libxml2 inoperable when processing malicious XML documents.

5

What is the exploit vector for CVE-2026-6732?

The exploit vector for CVE-2026-6732 involves processing a specially crafted XML Schema Definition document containing an internal entity reference.

Contact

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