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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Red Hat | Red Hat Hardened Images | — | — |
| Red Hat | Red Hat Enterprise Linux 10 | — | — |
| Red Hat | Red Hat Enterprise Linux 6 | — | — |
| Red Hat | Red Hat Enterprise Linux 7 | — | — |
| Red Hat | Red Hat Enterprise Linux 8 | — | — |
| Red Hat | Red Hat Enterprise Linux 9 | — | — |
| Red Hat | Red Hat JBoss Core Services | — | — |
| Red Hat | Red Hat OpenShift Container Platform 4 | — | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | libxml2 | 2.15.3+dfsg-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | libxml2 | 2.15.2+dfsg-0.1ubuntu0.1 | USN-8460-1 |
| Ubuntu 25.10 | libxml2 | 2.14.5+dfsg-0.2ubuntu0.2 | USN-8460-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Hardened Images 1 | libxml2 +4 | 2.15.3-0.1.hum1 | RHSA-2026:11503 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 16.0 | libxml2 +1 | 2.13.8-160000.5.1 | SUSE-SU-2026:22636-1 |
| SLES 16.0 | libxml2 +1 | 2.13.8-160000.5.1 | SUSE-SU-2026:22636-1 |
| SLE Micro 6.2 | libxml2 +1 | 2.13.8-160000.5.1 | SUSE-SU-2026:22596-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 16.0 | libxml2 +1 | 2.13.8-160000.5.1 | openSUSE-SU-2026:21317-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | libxml2 | 2.13.9-r2 | — |
| Alpine v3.24 | openjdk21 | 21.0.13.0.3_p1-r0 | — |
| Alpine v3.24 | openjdk25 | 25.0.5.0.3_p1-r0 | — |
| Alpine v3.24 | qt6-qtwebengine | 6.11.0-r9 | — |
| Alpine v3.23 | libxml2 | 2.13.9-r1 | — |
| Alpine v3.23 | openjdk21 | 21.0.13.0.3_p1-r0 | — |
| Alpine v3.23 | openjdk25 | 25.0.5.0.3_p1-r0 | — |
| Alpine v3.23 | qt6-qtwebengine | 6.10.3-r3 | — |
| Alpine v3.22 | libxml2 | 2.13.9-r1 | — |
| Alpine v3.21 | libxml2 | 2.13.9-r1 | — |
Advisories 11
- WID-SEC-2026-4079 Oracle Java SE: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 12, 2026
- NCSC-2026-0449 Meerdere kwetsbaarheden verholpen in Oracle Java NCSC-NL (Netherlands) · Oct 22, 2026
- ICSA-26-293-05 Hitachi Energy RTU500 Product CISA ICS & IT advisories · Oct 20, 2026
- RHSA-2026:11503 Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update Red Hat Security Advisories (RHSA) · Oct 14, 2026
- WID-SEC-2026-3167 Hitachi Energy RTU500: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 2, 2026
- WID-SEC-2026-3038 Meinberg LANTIME: Mehrere Schwachstellen BSI CERT-Bund (WID) · Aug 26, 2026
- SUSE-SU-2026:22636-1 Security update for libxml2 SUSE / openSUSE Security Updates · Jul 17, 2026
- WID-SEC-2026-1257 libxml2: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Jul 16, 2026
- SUSE-SU-2026:22596-1 Security update for libxml2 SUSE / openSUSE Security Updates · Jul 16, 2026
- openSUSE-SU-2026:21317-1 Security update for libxml2 SUSE / openSUSE Security Updates · Jul 15, 2026
- USN-8460-1 libxml2 vulnerabilities Ubuntu Security Notices (USN) · Jun 23, 2026