CVE-2026-6732
Libxml2: libxml2: denial of service via crafted xsd-validated document
At a glance
- Severity
- MEDIUM 6.5
- EPSS
- EPSS 0.63 % · percentile 50 (2026-10-27)
- State
- PUBLISHED
- Published
- Updated
- Assigner
- redhat
- NVD status
- Analyzed
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.
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 6.5 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | redhat |
| CVSS 3.1 | MEDIUM 6.5 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | NVD · secalert@redhat.com (Secondary) |
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | NVD · nvd@nist.gov (Primary) |
Weaknesses (CWE)
European references
- ENISA EUVD · EUVD-2026-25346
- GCVE · GCVE-0-2026-6732
CERT-FR advisories
- CERTFR-2026-AVI-1390 — Multiples vulnérabilités dans Tenable Network Monitor · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1385 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1350 — Multiples vulnérabilités dans Oracle Java SE · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:xmlsoft:libxml2:*:*:*:*:*:*:*:*≥ 2.13.0 < 2.15.3cpe: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: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:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*cpe:2.3:a:ibm:vios:*:*:*:*:*:*:*:*≥ 4.1.0 < 4.1.1.30cpe:2.3:a:ibm:vios:4.1.2.0:*:*:*:*:*:*:*cpe:2.3:o:ibm:aix:*:*:*:*:*:*:*:*≥ 7.2.5 < 7.2.5.12cpe:2.3:o:ibm:aix:*:*:*:*:*:*:*:*≥ 7.3.2 < 7.3.3.3cpe:2.3:o:ibm:aix:7.3.4:*:*:*:*:*:*:*
Affected products
References
- https://access.redhat.com/errata/RHSA-2026:11503
- 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
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |