libxml2: libxml2: Information disclosure, SSRF, or denial of service due to improper parseFlags propagation.

A flaw in libxml2's XInclude processing xmlXIncludeProcess and xmlXIncludeProcessTree fails to propagate parser flags like XMLPARSENONET. This allows custom resource loaders to fetch external network resources, potentially enabling Server-Side Request Forgery SSRF, XML External Entity XXE...