PT-2026-34793 · Libxml2+1 · Libxml2+1

Anten Skrabec + 1 · Published 2026-04-23 · Updated 2026-05-28 · CVE-2026-6732

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions libxml2 (affected versions not specified)

Description A flaw exists when the library processes a specially crafted XML Schema Definition (XSD) validated document containing an internal entity reference. An attacker can provide a malicious document to trigger a type confusion error, resulting in an application crash and a subsequent denial of service (DoS), which renders the affected system or application unavailable.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

DoS

Type Confusion

Weakness Enumeration

CWE-843

Related Identifiers

CVE-2026-6732

ECHO-778A-550A-1FD5

RHSA-2026:11503

Affected Products

Ibm Aix

Libxml2

References · 20

• 🔥 https://gitlab.gnome.org/GNOME/libxml2/-/issues/1097 · Exploit
• https://access.redhat.com/errata/RHSA-2026:11503 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-6732 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-6732 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-6732 · Security Note
• https://osv.dev/vulnerability/BELL-CVE-2026-6732 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-6732 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-6732 · Vendor Advisory
• https://osv.dev/vulnerability/ALPINE-CVE-2026-6732 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-6732 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-12-CVE-2026-6732 · Vendor Advisory
• https://aix.software.ibm.com/aix/efixes/security/libxml2_advisory11.asc · Note
• https://access.redhat.com/security/cve/CVE-2026-6732 · Note
• https://gitlab.gnome.org/GNOME/libxml2/-/merge_requests/411 · Note
• https://t.me/cveNotify/163626 · Telegram Post