MEDIUM 5.6 Microsoft
CVE-2026-86144
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).
Microsoft Security Update 2026-Sep: 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).
Affected Products
- azl3 libxml2 2.11.5-10 on Azure Linux 3.0
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-86144
- https://nvd.nist.gov/vuln/detail/CVE-2026-86144
This medium severity vulnerability with a CVSS score of 5.6 was published on 2026-09-08 via Microsoft. Affected: azl3 libxml2 2.11.5-10 on Azure Linux 3.0.
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