Vulnerability Report

CVE-2026-6732

Title: DoS via Type Confusion in libxml2 XML Schema Processing

DoS

Proof Of Concept

No public PoC currently indexed for CVE-2026-6732.

CWE Category CWE-843

Published Date Apr 23, 2026

Modified Date Jun 30, 2026

Exploit Status Not Found

Score 6.5 CVSS v3.1

Exploit Probability (EPSS)

0.63%

Vulnerability Summary

CVE-2026-6732: 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.

Impacted Vendors

ibm 1

redhat 3

xmlsoft 1

Reference Links

https://access.redhat.com/security/cve/CVE-2026-6732 https://bugzilla.redhat.com/show_bug.cgi?id=2461300 https://gitlab.gnome.org/GNOME/libxml2/-/issues/1097 https://gitlab.gnome.org/GNOME/libxml2/-/merge_requests/411

CVSS v3.1

Source Entity [email protected]

Severity MEDIUM

6.5

Attack Vector

ADJACENT_NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

RAW VECTOR CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H