GHSA-x7m8-jrm8-hpvx: @eigenpal/docx-editor-react Cross-Site Scripting Vulnerability

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-x7m8-jrm8-hpvx",
  "modified" : "2026-09-10T15:06:16Z",
  "published" : "2026-09-10T15:06:16Z",
  "aliases" : [ ],
  "summary" : "@eigenpal/docx-editor-react: CSS injection and print-time XSS via unescaped embedded font-family name",
  "details" : "## Summary\nEmbedded 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>`\n  into executable HTML on Print.\n\n## Impact\nOpening 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.\n\n## Remediation\nUpgrade 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`.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "@eigenpal/docx-editor-core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.8.3"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 1.8.2"
    }
  }, {
    "package" : {
      "ecosystem" : "npm",
      "name" : "@eigenpal/docx-editor-react"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.8.3"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 1.8.2"
    }
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/eigenpal/docx-editor/security/advisories/GHSA-x7m8-jrm8-hpvx"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/eigenpal/docx-editor"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-09-10T15:06:16Z",
    "nvd_published_at" : null
  }
}