PYSEC-2026-1609 MaterialX Stack Overflow via Lack of MTLX XML Parsing Recursion Limit

Summary When parsing an MTLX file with multiple nested nodegraph implementations, the MaterialX XML parsing logic can potentially crash due to stack exhaustion. Details By specification, multiple kinds of elements in MTLX support nesting other elements, such as in the case of nodegraph elements...

Stack-based Buffer Overflow

Overview Affected versions of this package are vulnerable to Stack-based Buffer Overflow via the XML parsing process. An attacker can cause a crash by providing a specially crafted MTLX file with deeply nested nodegraph elements, leading to stack exhaustion during recursive parsing. Remediation...