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.
CVSS Details
- CVSS 3.1 Base Score: 2.9
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade libxml2-develUpgrade libxml2Upgrade libxml2-staticUpgrade libxml2-pythonUpgrade libxml2-debuginfo | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade python3-libxml2-debuginfoUpgrade libxml2-debugsourceUpgrade libxml2Upgrade libxml2-develUpgrade libxml2-debuginfoUpgrade python3-libxml2Upgrade libxml2-static | Feb 10, 2026 | Jan 15, 2026 |
| Debian | — | Upgrade libxml2 | Jun 9, 2026 | Jun 9, 2026 |
| Huawei Euleros 2_0_sp13 | — | Upgrade libxml2Upgrade python3-libxml2 | Mar 10, 2026 | Mar 10, 2026 |
| Ibm Aix | — | Apply the fix or workaround for libxml2_advisory11 | May 31, 2026 | May 28, 2026 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Jan 15, 2026 |
| Suse | — | Upgrade libxml2-docUpgrade libxslt-develUpgrade libxslt-toolsUpgrade python311-libxml2Upgrade libxml2-2Upgrade python3-libxml2Upgrade python313-libxml2Upgrade libxml2-toolsUpgrade libxml2-2-32bitUpgrade python-libxml2Upgrade libexslt0Upgrade libxslt1Upgrade python3-libxml2-pythonUpgrade libxml2-develUpgrade libxml2-devel-32bit | Feb 18, 2026 | Feb 17, 2026 |
| Ubuntu | — | Upgrade libxml2 (Ubuntu Pro)Upgrade libxml2Upgrade libxml2-16 | Jan 23, 2026 | Jan 15, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jun 29, 2026 | Jan 15, 2026 |
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