Vulnerability Description
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 DOCX containing mutually based styles causes unbounded recursion in PropertyResolver.fillPPrStack and related effective-style resolution paths, resulting in StackOverflowError. Server-side conversion and table-of-contents processing of an untrusted document can terminate a worker thread, degrade a thread pool, or deny service, although isolation in disposable workers or safe containment of StackOverflowError can reduce the practical effect. The fix adds cyclic-style tracking and CyclicStylesException handling. This issue is fixed in version 11.5.14.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/plutext/docx4j/commit/47b528c7dd4c81bcfc8e7fe9df7610c60446f95
- https://github.com/plutext/docx4j/commit/e06cafb334089f0be02e1c63a7c0a602bd44bf0
- https://github.com/plutext/docx4j/releases/tag/docx4j-11.5.14
- https://github.com/plutext/docx4j/security/advisories/GHSA-gc95-3vw8-vg43
FAQ
What is CVE-2026-53752?
CVE-2026-53752 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 foll...
How severe is CVE-2026-53752?
CVE-2026-53752 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-53752?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.