Unbounded namespace-declaration allocation in `NsReader` enables memory-exhaustion denial of service

NsReader resolves namespaces by calling NamespaceResolver::push for every Start/Empty event before the event is returned to the caller. push iterated all xmlns / xmlns: attributes on the start tag and, for each one, appended the prefix bytes to an internal buffer and pushed a NamespaceBinding 32...

PT-2026-56867

NsReader resolves namespaces by calling NamespaceResolver::push for every Start/Empty event before the event is returned to the caller. push iterated all xmlns / xmlns: attributes on the start tag and, for each one, appended the prefix bytes to an internal buffer and pushed a NamespaceBinding 32...