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CVE-2026-6732

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

Published: Apr 23, 2026Updated: May 15, 2026 Sources: CVE List NVDCWE-843
NVD MITRE
6.5CVSSMEDIUM
EPSS Score
0.6%
Top 54.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

Description

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.

CVSS Vector Breakdown

AV:AAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:AAttack Vector
Adjacent
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-843

Affected Products

libxml2xmlsoft
LibraryLibrary
OSS Libraries / generic-library
hardened imagesredhat
On-premOS
Operating Systems / linux-distro
jboss core servicesredhat
LibraryLibrary
OSS Libraries / generic-library
openshift container platformredhat
SaaSSaaS Service
Cloud & SaaS / container-orchestration
enterprise linuxredhat
On-premOS
Operating Systems / linux-distro
xmlsoftoss-projectOSS Librariesaka libxml2, libxslt
redhatcommercialUSOperating Systemsaka red hat
and 8 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://access.redhat.com/errata/RHSA-2026:11503
access.redhat.com
https://access.redhat.com/security/cve/CVE-2026-6732
access.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2461300
bugzilla.redhat.com
and 2 more references View all →

Timeline

Published
Apr 23, 2026
Last Updated
May 15, 2026

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