{"cve":"CVE-2026-53752","nvd":{"published":"2026-09-14T18:17:51.773","modified":"2026-09-30T17:43:24.057","status":"Awaiting Analysis","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_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-674","CWE-770"],"references":["https://github.com/plutext/docx4j/commit/47b528c7dd4c81bcfc8e7fe9df7610c60446f95f","https://github.com/plutext/docx4j/commit/e06cafb334089f0be02e1c63a7c0a602bd44bf06","https://github.com/plutext/docx4j/releases/tag/docx4j-11.5.14","https://github.com/plutext/docx4j/security/advisories/GHSA-gc95-3vw8-vg43"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:53:43.293028046+00:00"},"epss":{"cve":"CVE-2026-53752","score":0.0063,"percentile":0.49888,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-gc95-3vw8-vg43","url":"https://osv.dev/vulnerability/GHSA-gc95-3vw8-vg43","summary":"docx4j: Stack Overflow via Cyclic `w:basedOn` Style Chain leads to Denial of Service","modified":"2026-08-17T22:11:01.639227Z","packages":[{"ecosystem":"Maven","name":"org.docx4j:docx4j-core","purl":"pkg:maven/org.docx4j/docx4j-core","ranges":["<11.5.14"],"fixed":["11.5.14"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}