---
id: GHSA-x7m8-jrm8-hpvx
title: >-
  @eigenpal/docx-editor-react: CSS injection and print-time XSS via unescaped
  embedded font-family name
summary: >-
  @eigenpal/docx-editor-react: CSS injection and print-time XSS via unescaped
  embedded font-family name
severity: high
cvss: 8.1
cwe:
  - CWE-79
vendor: eigenpal
product: '@eigenpal/docx-editor-core'
ecosystem: npm
affected:
  - '@eigenpal/docx-editor-core <= 1.8.2'
  - '@eigenpal/docx-editor-react <= 1.8.2'
patched:
  - '@eigenpal/docx-editor-core 1.8.3'
  - '@eigenpal/docx-editor-react 1.8.3'
published: '2026-09-10'
updated: '2026-09-10'
sourceUpdated: '2026-09-10T15:06:17Z'
source: GHSA
sourceUrl: 'https://github.com/advisories/GHSA-x7m8-jrm8-hpvx'
references:
  - url: >-
      https://github.com/eigenpal/docx-editor/security/advisories/GHSA-x7m8-jrm8-hpvx
  - url: 'https://github.com/advisories/GHSA-x7m8-jrm8-hpvx'
tags:
  - ghsa
  - npm
ingestedAt: '2026-09-10T15:53:17.072Z'
---

## Overview

## Summary
Embedded font-family names (`word/fontTable.xml`) were interpolated unescaped into an injected `@font-face` `<style>` and into the print window's `document.write()`. A crafted name injects page-wide CSS on open, and breaks out of `<style>`
  into executable HTML on Print.

## Impact
Opening a crafted `.docx` applies attacker-controlled CSS page-wide with zero clicks (overlay/phishing, attribute-selector exfiltration of input values, tracking beacons). Clicking Print escalates to script execution in the embedder's origin.

## Remediation
Upgrade to 1.8.3. Font names are CSS-escaped before interpolation (quotes, backslash, `< >`, and CSS newlines), and the print window is assembled with DOM APIs instead of `document.write`.

## Affected packages

- `@eigenpal/docx-editor-core <= 1.8.2`
- `@eigenpal/docx-editor-react <= 1.8.2`

## Remediation

Upgrade to a patched release:

- `@eigenpal/docx-editor-core 1.8.3`
- `@eigenpal/docx-editor-react 1.8.3`