In libexpat before 2.7.4, XML_ExternalEntityParserCreate does not copy unknown encoding handler user data.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade expat | Feb 4, 2026 | Jan 23, 2026 |
| Debian | — | Upgrade expat | Aug 2, 2026 | Jan 23, 2026 |
| Freebsd | — | Upgrade expat | Feb 13, 2026 | Feb 10, 2026 |
| Ibm Aix | — | Apply the fix or workaround for perl_advisory13Apply the fix or workaround for python_advisory18 | Mar 18, 2026 | Mar 17, 2026 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Jan 23, 2026 |
| Ubuntu | — | Upgrade lib64expat1 (Ubuntu Pro)Upgrade expat (Ubuntu Pro)Upgrade libexpat1 (Ubuntu Pro)Upgrade libexpat1Upgrade libxmltok1t64 (Ubuntu Pro)Upgrade libxmltok1 (Ubuntu Pro)Upgrade expat | Feb 12, 2026 | Jan 23, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | Jan 23, 2026 |
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