CVE-2026-53752

docx4j is an open source Java library for creating, editing, and saving OpenXML packages, including DOCX, PPTX, and XLSX files. Prior to 11.5.14, PropertyResolver and adjacent helpers recursively follow the WordprocessingML w:basedOn style inheritance chain without cycle detection. A well-formed...

docx4j: Stack Overflow via Cyclic `w:basedOn` Style Chain leads to Denial of Service

Summary docx4j's PropertyResolver and several adjacent helpers recursively walk the OpenXML style inheritance chain w:basedOn without cycle detection. A WordprocessingML document containing a cyclic style chain for example, Style A based on B and Style B based on A causes unbounded recursion and ...