CVE catalog
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 atta
- Severity
- Medium · CVSS 6.5
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.63% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | libxml2 | sid | 2.15.4+dfsg-1 | fixed |
| Debian | libxml2 | forky | 2.15.4+dfsg-1 | fixed |
| Debian | libxml2 | trixie | 2.12.7+dfsg+really2.9.14-2.1+deb13u3 | not affected |
| Debian | libxml2 | trixie-security | 2.12.7+dfsg+really2.9.14-2.1+deb13u1 | not affected |
| Debian | libxml2 | bookworm | 2.9.14+dfsg-1.3~deb12u6 | not affected |
| Debian | libxml2 | bookworm-security | 2.9.14+dfsg-1.3~deb12u4 | not affected |
| Cpe | libxml2 | Not reported | 2.15.3 | fixed |
| Cpe | hardened_images | Not reported | Not reported | unknown |
| Cpe | jboss_core_services | Not reported | Not reported | unknown |
| Cpe | openshift_container_platform | Not reported | Not reported | unknown |
| Cpe | enterprise_linux | Not reported | Not reported | unknown |
| Cpe | vios | Not reported | 4.1.1.30 | fixed |
| Cpe | vios | Not reported | Not reported | unknown |
| Cpe | aix | Not reported | 7.2.5.12 | fixed |
| Cpe | aix | Not reported | 7.3.3.3 | fixed |
| Cpe | aix | Not reported | Not reported | unknown |
| Cpe | libxml2 | Not reported | Not reported | not affected |
| Cpe | libxml2 | Not reported | 2.15.3 | fixed |
| Cpe | hardened_images | Not reported | Not reported | unknown |
| Cpe | jboss_core_services | Not reported | Not reported | unknown |
| Cpe | openshift_container_platform | Not reported | Not reported | unknown |
| Cpe | enterprise_linux | Not reported | Not reported | unknown |
| Cpe | vios | Not reported | Not reported | unknown |
| Cpe | aix | Not reported | Not reported | unknown |
| Alpine | libxml2 | 3.21 | 2.13.9-r1 | fixed |
| Alpine | libxml2 | 3.22 | 2.13.9-r1 | fixed |
| Alpine | libxml2 | 3.23 | 2.13.9-r1 | fixed |
| Alpine | libxml2 | 3.24 | 2.13.9-r2 | fixed |
| Ubuntu | libxml2 | 25.10 | 2.12.7+dfsg+really2.9.14-0.4 | vulnerable |
| Ubuntu | libxml2 | 25.10 | 2.12.7+dfsg+really2.9.14-0.4ubuntu0.1 | vulnerable |
| Ubuntu | libxml2 | 25.10 | 2.12.7+dfsg+really2.9.14-1 | vulnerable |
| Ubuntu | libxml2 | 25.10 | 2.14.3+dfsg-0exp1 | vulnerable |
| Ubuntu | libxml2 | 25.10 | 2.14.3+dfsg-0exp2 | vulnerable |
| Ubuntu | libxml2 | 25.10 | 2.14.3+dfsg-0exp3 | vulnerable |
| Ubuntu | libxml2 | 25.10 | 2.14.4+dfsg-0exp1 | vulnerable |
| Ubuntu | libxml2 | 25.10 | 2.14.5+dfsg-0exp1 | vulnerable |
| Ubuntu | libxml2 | 25.10 | 2.14.5+dfsg-0exp2 | vulnerable |
| Ubuntu | libxml2 | 25.10 | 2.14.5+dfsg-0.1 | vulnerable |
| Ubuntu | libxml2 | 25.10 | 2.14.5+dfsg-0.2 | vulnerable |
| Ubuntu | libxml2 | 25.10 | 2.14.5+dfsg-0.2ubuntu0.1 | vulnerable |
| Ubuntu | libxml2 | 25.10 | 2.14.5+dfsg-0.2ubuntu0.2 | fixed |
| Ubuntu | libxml2 | 26.04 | 2.14.5+dfsg-0.2 | vulnerable |
| Ubuntu | libxml2 | 26.04 | 2.14.5+dfsg-0.2build1 | vulnerable |
| Ubuntu | libxml2 | 26.04 | 2.15.1+dfsg-0.3 | vulnerable |
| Ubuntu | libxml2 | 26.04 | 2.15.1+dfsg-0.4 | vulnerable |
| Ubuntu | libxml2 | 26.04 | 2.15.1+dfsg-1 | vulnerable |
| Ubuntu | libxml2 | 26.04 | 2.15.1+dfsg-2 | vulnerable |
| Ubuntu | libxml2 | 26.04 | 2.15.1+dfsg-2ubuntu1 | vulnerable |
| Ubuntu | libxml2 | 26.04 | 2.15.1+dfsg-2ubuntu2 | vulnerable |
| Ubuntu | libxml2 | 26.04 | 2.15.2+dfsg-0.1 | vulnerable |
| Ubuntu | libxml2 | 26.04 | 2.15.2+dfsg-0.1ubuntu0.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | libxml2 | source | sid | 2.15.3+dfsg-1 | not yet assigned | Not reported | [1134866] |
| Debian | libxml2 | source | forky | 2.15.3+dfsg-1 | not yet assigned | Not reported | [1134866] |
| Debian | libxml2 | source | trixie | Not affected | unimportant | Not reported | [1134866] |
| Debian | libxml2 | source | bookworm | Not affected | unimportant | Not reported | [1134866] |
| Cpe | libxml2 | cpe | Not reported | 2.15.3 | Not reported | Not reported | Not reported |
| Cpe | vios | cpe | Not reported | 4.1.1.30 | Not reported | Not reported | Not reported |
| Cpe | aix | cpe | Not reported | 7.2.5.12 | Not reported | Not reported | Not reported |
| Cpe | aix | cpe | Not reported | 7.3.3.3 | Not reported | Not reported | Not reported |
| Cpe | libxml2 | cpe | Not reported | 2.15.3 | Not reported | NVD-CVE-2026-6732 | Not reported |
| Alpine | libxml2 | apk | 3.21 | 2.13.9-r1 | Not reported | ALPINE-CVE-2026-6732 | Not reported |
| Alpine | libxml2 | apk | 3.22 | 2.13.9-r1 | Not reported | ALPINE-CVE-2026-6732 | Not reported |
| Alpine | libxml2 | apk | 3.23 | 2.13.9-r1 | Not reported | ALPINE-CVE-2026-6732 | Not reported |
| Alpine | libxml2 | apk | 3.24 | 2.13.9-r2 | Not reported | ALPINE-CVE-2026-6732 | Not reported |
| Ubuntu | libxml2 | deb | 25.10 | 2.14.5+dfsg-0.2ubuntu0.2 | Not reported | UBUNTU-CVE-2026-6732 | Not reported |
| Ubuntu | libxml2 | deb | 26.04 | 2.15.2+dfsg-0.1ubuntu0.1 | Not reported | UBUNTU-CVE-2026-6732 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [libxml2]Not affected
Details (4)
2.9.14+dfsg-1.3~deb12u6· amd64 · bookwormNot affected
nvd · libxml2 · debian · bookworm
2.9.14+dfsg-1.3~deb12u6· arm64 · bookwormNot affected
nvd · libxml2 · debian · bookworm
2.9.14+dfsg-1.3~deb12u4· amd64 · bookworm-securityNot affected
nvd · libxml2 · debian · bookworm
2.9.14+dfsg-1.3~deb12u4· arm64 · bookworm-securityNot affected
nvd · libxml2 · debian · bookworm
- [libxml2-dev]Not affected
Source package: [libxml2]
Details (4)
2.9.14+dfsg-1.3~deb12u6· amd64 · bookwormNot affected
nvd · libxml2 · debian · bookworm
2.9.14+dfsg-1.3~deb12u6· arm64 · bookwormNot affected
nvd · libxml2 · debian · bookworm
2.9.14+dfsg-1.3~deb12u4· amd64 · bookworm-securityNot affected
nvd · libxml2 · debian · bookworm
2.9.14+dfsg-1.3~deb12u4· arm64 · bookworm-securityNot affected
nvd · libxml2 · debian · bookworm
- [libxml2-doc]Not affected
Source package: [libxml2]
Details (4)
2.9.14+dfsg-1.3~deb12u6· all · bookwormNot affected
nvd · libxml2 · debian · bookworm
2.9.14+dfsg-1.3~deb12u6· all · bookwormNot affected
nvd · libxml2 · debian · bookworm
2.9.14+dfsg-1.3~deb12u4· all · bookworm-securityNot affected
nvd · libxml2 · debian · bookworm
2.9.14+dfsg-1.3~deb12u4· all · bookworm-securityNot affected
nvd · libxml2 · debian · bookworm
- [libxml2-utils]Not affected
Source package: [libxml2]
Details (4)
2.9.14+dfsg-1.3~deb12u6· amd64 · bookwormNot affected
nvd · libxml2 · debian · bookworm
2.9.14+dfsg-1.3~deb12u6· arm64 · bookwormNot affected
nvd · libxml2 · debian · bookworm
2.9.14+dfsg-1.3~deb12u4· amd64 · bookworm-securityNot affected
nvd · libxml2 · debian · bookworm
2.9.14+dfsg-1.3~deb12u4· arm64 · bookworm-securityNot affected
nvd · libxml2 · debian · bookworm
- [python3-libxml2]Not affected
Source package: [libxml2]
Details (4)
2.9.14+dfsg-1.3~deb12u6· amd64 · bookwormNot affected
nvd · libxml2 · debian · bookworm
2.9.14+dfsg-1.3~deb12u6· arm64 · bookwormNot affected
nvd · libxml2 · debian · bookworm
2.9.14+dfsg-1.3~deb12u4· amd64 · bookworm-securityNot affected
nvd · libxml2 · debian · bookworm
2.9.14+dfsg-1.3~deb12u4· arm64 · bookworm-securityNot affected
nvd · libxml2 · debian · bookworm
Observed:
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://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2026_21317-1.json]
- [https://gitlab.gnome.org/GNOME/libxml2/-/issues/1097]
- [https://gitlab.gnome.org/GNOME/libxml2/-/merge_requests/411]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-6732]
- [https://osv.dev/vulnerability/ALPINE-CVE-2026-6732]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-6732]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2026-6732]
- [https://security-tracker.debian.org/tracker/CVE-2026-6732]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-6732.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-1257.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]