In xinclude in libxml2 before 2.15.4, xmlXIncludeProcess and xmlXIncludeProcessTree do not propagate parseFlags. This has security relevance for, for example, the XML_PARSE_NONET flag, if (without it) a custom resource loader accesses the internet and triggers XML external entity injection, SSRF, or a denial of service (e.g., for an attacker-controlled internet resource that is intentionally slow).
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade libxml2-develUpgrade libxml2Upgrade python3-libxml2 | Oct 11, 2026 | Sep 24, 2026 |
| Amazon_linux_2023 | — | Upgrade python3-libxml2Upgrade python3-libxml2-debuginfoUpgrade libxml2-staticUpgrade libxml2Upgrade libxml2-debuginfoUpgrade libxml2-develUpgrade libxml2-debugsource | Sep 30, 2026 | Sep 5, 2026 |
| Redhat_linux | — | Upgrade libxml2-staticUpgrade python3-libxml2Upgrade python3-libxml2-debuginfoUpgrade libxml2-debuginfoUpgrade libxml2-develNo solution existsUpgrade libxml2-debugsourceUpgrade libxml2 | Sep 10, 2026 | Sep 5, 2026 |
| Rocky_linux | — | Upgrade python3-libxml2-debuginfoUpgrade python3-libxml2Upgrade libxml2-debugsourceUpgrade libxml2Upgrade libxml2-develUpgrade libxml2-debuginfoUpgrade libxml2-static | Sep 28, 2026 | Sep 26, 2026 |
| Ubuntu | — | Upgrade libxml2-devUpgrade libxml2-sourceUpgrade libxml2Upgrade libxml2-16Upgrade libxml2-dev (Ubuntu Pro)Upgrade libxml2 (Ubuntu Pro) | Oct 12, 2026 | Oct 8, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Sep 21, 2026 | Sep 5, 2026 |
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