CVE-2026-73569

fast-xml-parser allows users to process XML from JS object without C/C++ based libraries or callbacks. From 5.9.3 until 5.10.1, src/xmlparser/OrderedObjParser.js processes multiple DOCTYPE declarations within a single XML document and passes each declaration's entities through addInputEntities...

CVE-2026-73569 fast-xml-parser: Repeated DOCTYPE declarations reset entity expansion limits

fast-xml-parser allows users to process XML from JS object without C/C++ based libraries or callbacks. From 5.9.3 until 5.10.1, src/xmlparser/OrderedObjParser.js processes multiple DOCTYPE declarations within a single XML document and passes each declaration's entities through addInputEntities...

CVE-2026-73569

CVE-2026-73569 affects fast-xml-parser (OrderedObjParser.js). When parsing a single XML with multiple DOCTYPE declarations (versions 5.9.3–5.10.1), addInputEntities() repeatedly resets entity-expansion limits, allowing repeated resets within one parse. This can cause excessive CPU use, event-loop...