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.
Published: 2026-04-23
Score: 6.5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Denial of Service
Action: Apply Patch
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Fri, 15 May 2026 14:45:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:xmlsoft:libxml2:-:*:*:*:*:*:*:* cpe:2.3:a:xmlsoft:libxml2:*:*:*:*:*:*:*:*

Tue, 05 May 2026 14:00:00 +0000

Type Values Removed Values Added
First Time appeared Redhat hardened Images
Xmlsoft
Xmlsoft libxml2
CPEs cpe:2.3:a:redhat:hardened_images:-:*:*:*:*:*:*:*
cpe:2.3:a:redhat:jboss_core_services:-:*:*:*:*:*:*:*
cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:*
cpe:2.3:a:xmlsoft:libxml2:-:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
Vendors & Products Redhat hardened Images
Xmlsoft
Xmlsoft libxml2

Thu, 30 Apr 2026 18:00:00 +0000

Type Values Removed Values Added
References

Mon, 27 Apr 2026 20:45:00 +0000

Type Values Removed Values Added
First Time appeared Redhat libxml2
Redhat openshift Container Platform
Vendors & Products Redhat libxml2
Redhat openshift Container Platform

Mon, 27 Apr 2026 17:00:00 +0000

Type Values Removed Values Added
First Time appeared Redhat hummingbird
CPEs cpe:/a:redhat:hummingbird:1
Vendors & Products Redhat hummingbird

Sun, 26 Apr 2026 00:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 24 Apr 2026 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Moderate


Thu, 23 Apr 2026 22:30:00 +0000

Type Values Removed Values Added
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.
Title Libxml2: libxml2: denial of service via crafted xsd-validated document
First Time appeared Redhat
Redhat enterprise Linux
Redhat jboss Core Services
Redhat openshift
Weaknesses CWE-843
CPEs cpe:/a:redhat:jboss_core_services:1
cpe:/a:redhat:openshift:4
cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:6
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux
Redhat jboss Core Services
Redhat openshift
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}


Subscriptions

Redhat Enterprise Linux Hardened Images Hummingbird Jboss Core Services Libxml2 Openshift Openshift Container Platform
Xmlsoft Libxml2
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-04-30T17:11:03.871Z

Reserved: 2026-04-20T22:34:45.863Z

Link: CVE-2026-6732

cve-icon Vulnrichment

Updated: 2026-04-24T10:54:12.306Z

cve-icon NVD

Status : Analyzed

Published: 2026-04-23T23:16:16.443

Modified: 2026-05-15T14:36:35.823

Link: CVE-2026-6732

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-04-16T00:00:00Z

Links: CVE-2026-6732 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-04-28T07:15:19Z

Weaknesses