High 7.5Published Sep 14, 2026

CVE-2026-53752docx4j: Stack Overflow via Cyclic `w:basedOn` Style Chain leads to Denial of Service

Updated under an hour ago (2026-10-19 11:20 UTC)

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Every CVE for plutext docx4j

Exploited in the last 30 days

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: 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-674, CWE-770
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Awaiting Analysis
Record last updated: Sep 16, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

plutext docx4j plutext:docx4j (from the name)	before 11.5.14	CNA record
org.docx4j docx4j-core org.docx4j:docx4j_core (from the name)	before 11.5.14	CNA record

References

https://github.com/plutext/docx4j/security/advisories/GHSA-gc95-3vw8-vg43x-refsource-confirm
https://github.com/plutext/docx4j/commit/47b528c7dd4c81bcfc8e7fe9df7610c60446f95fx-refsource-misc
https://github.com/plutext/docx4j/commit/e06cafb334089f0be02e1c63a7c0a602bd44bf06x-refsource-misc
https://github.com/plutext/docx4j/releases/tag/docx4j-11.5.14x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.