CVE-2026-0992
Fixed in a distro release EPSS <1%CVSS 2.9
A flaw was found in the libxml2 library. This uncontrolled resource consumption vulnerability occurs when processing XML catalogs that contain repeated <nextCatalog> elements pointing to the same downstream catalog. A remote attacker can exploit this by supplying crafted catalogs, causing the parser to redundantly traverse catalog chains. This leads to excessive CPU consumption and degrades application availability, resulting in a denial-of-service condition.
Products: Red Hat Hardened Images, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat JBoss Core Services, Red Hat OpenShift Container Platform 4
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Amazon Linux 2 | libxml2 | 2.9.1-6.amzn2.5.22 |
| Amazon Linux 2 | libxml2-devel | 2.9.1-6.amzn2.5.22 |
| Amazon Linux 2 | libxml2-python | 2.9.1-6.amzn2.5.22 |
| Amazon Linux 2 | libxml2-static | 2.9.1-6.amzn2.5.22 |
| Amazon Linux 2023 | libxml2 | 2.10.4-1.amzn2023.0.16 |
| Amazon Linux 2023 | libxml2-devel | 2.10.4-1.amzn2023.0.16 |
| Amazon Linux 2023 | libxml2-static | 2.10.4-1.amzn2023.0.16 |
| Amazon Linux 2023 | python3-libxml2 | 2.10.4-1.amzn2023.0.16 |
| Debian 12 | libxml2 | 2.9.14+dfsg-1.3~deb12u6 |
| Debian 13 | libxml2 | 2.12.7+dfsg+really2.9.14-2.1+deb13u3 |
| Debian 14 | libxml2 | 2.15.2+dfsg-0.1 |
| Red Hat hummingbird 1 | libxml2 | 0:2.15.2-0.3.hum1 |
| Red Hat hummingbird 1 | libxml2-16 | 0:2.15.2-0.3.hum1 |
| Red Hat hummingbird 1 | libxml2-devel | 0:2.15.2-0.3.hum1 |
| Red Hat hummingbird 1 | libxml2-static | 0:2.15.2-0.3.hum1 |
| Red Hat hummingbird 1 | python3-libxml2 | 0:2.15.2-0.3.hum1 |
| SUSE Linux Enterprise Micro 5.2 | libxml2 | 2.9.7-150000.3.94.1 |
| SUSE Linux Enterprise Micro 5.2 | python-libxml2-python | 2.9.7-150000.3.94.1 |
| SUSE Linux Enterprise Micro 5.3 | libxml2 | 2.9.14-150400.5.55.1 |
| SUSE Linux Enterprise Micro 5.3 | libxml2-python | 2.9.14-150400.5.55.1 |
| SUSE Linux Enterprise Micro 5.4 | libxml2 | 2.9.14-150400.5.55.1 |
| SUSE Linux Enterprise Micro 5.4 | libxml2-python | 2.9.14-150400.5.55.1 |
| SUSE Linux Enterprise Micro 5.5 | libxml2 | 2.10.3-150500.5.38.1 |
| SUSE Linux Enterprise Micro 5.5 | libxml2-python | 2.10.3-150500.5.38.1 |
| SUSE Linux Enterprise Module for Basesystem 15 SP7 | libxml2 | 2.12.10-150700.4.11.1 |
| SUSE Linux Enterprise Module for Basesystem 15 SP7 | libxml2-python | 2.12.10-150700.4.11.1 |
| SUSE Linux Enterprise Module for Python 3 15 SP7 | libxml2-python | 2.12.10-150700.4.11.1 |
| SUSE Linux Enterprise Server 16.0 | libxml2 | 2.13.8-160000.4.1 |
| SUSE Linux Enterprise Server 16.0 | libxml2-python | 2.13.8-160000.4.1 |
| SUSE Linux Enterprise Server 16.0 | libxslt | 1.1.43-160000.4.1 |
| SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 | libxml2 | 2.9.4-46.99.1 |
| SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 | python-libxml2 | 2.9.4-46.99.1 |
| SUSE Linux Enterprise Server for SAP applications 16.0 | libxml2 | 2.13.8-160000.4.1 |
| SUSE Linux Enterprise Server for SAP applications 16.0 | libxml2-python | 2.13.8-160000.4.1 |
| SUSE Linux Enterprise Server for SAP applications 16.0 | libxslt | 1.1.43-160000.4.1 |
| SUSE Linux Micro 6.0 | libxml2 | 2.11.6-12.1 |
| SUSE Linux Micro 6.0 | libxml2-python | 2.11.6-12.1 |
| SUSE Linux Micro 6.0 | libxslt | 1.1.38-8.1 |
| SUSE Linux Micro 6.1 | libxml2 | 2.11.6-slfo.1.1_8.1 |
| SUSE Linux Micro 6.1 | libxml2-python | 2.11.6-slfo.1.1_8.1 |
| SUSE Linux Micro 6.1 | libxslt | 1.1.38-slfo.1.1_6.1 |
| SUSE Linux Micro 6.2 | libxml2 | 2.13.8-160000.4.1 |
| SUSE Linux Micro 6.2 | libxml2-python | 2.13.8-160000.4.1 |
| SUSE Linux Micro 6.2 | libxslt | 1.1.43-160000.4.1 |
| Ubuntu 22.04 LTS | libxml2 | 2.9.13+dfsg-1ubuntu0.11 |
| Ubuntu 24.04 LTS | libxml2 | 2.9.14+dfsg-1.3ubuntu3.7 |
| Ubuntu 25.10 | libxml2 | 2.14.5+dfsg-0.2ubuntu0.1 |
| Ubuntu Pro 14.04 LTS | libxml2 | 2.9.1+dfsg1-3ubuntu4.13+esm11 |
| Ubuntu Pro 16.04 LTS | libxml2 | 2.9.3+dfsg1-1ubuntu0.7+esm12 |
| Ubuntu Pro 18.04 LTS | libxml2 | 2.9.4+dfsg1-6.1ubuntu1.9+esm7 |
| Ubuntu Pro 20.04 LTS | libxml2 | 2.9.10+dfsg-5ubuntu0.20.04.10+esm4 |
| openSUSE Leap 15.6 | libxml2 | 2.10.3-150500.5.38.1 |
| openSUSE Leap 15.6 | libxml2-python | 2.10.3-150500.5.38.1 |
| openSUSE Leap 15.6 | python-libxml2-python | 2.9.7-150000.3.94.1 |
| openSUSE Leap 16.0 | libxml2 | 2.13.8-160000.4.1 |
| openSUSE Leap 16.0 | libxml2-python | 2.13.8-160000.4.1 |
| openSUSE Leap 16.0 | libxslt | 1.1.43-160000.4.1 |
| openSUSE Tumbleweed | libxml2 | 2.14.5-4.1 |