{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "ngx-extended-pdf-viewer"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "27.0.0-rc.0"
            },
            {
              "fixed": "29.0.0-rc.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [
      "CWE-1103"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-08-06T21:13:59Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "ngx-extended-pdf-viewer embeds a fork of Mozilla\u0027s pdf.js rather than depending on pdfjs-dist, so this vulnerability is not visible to dependency scanners through package.json.\n\n### Impact\nOpening a malicious PDF can execute attacker-controlled JavaScript in the context of the hosting page. Upstream advisory: GHSA-hq66-cqwq-w95j / CVE-2026-16633.\n\n### Exposure. \nThe sandbox half of the issue requires enableScripting, which pdf.js enables by default but this library does not \u2014 so the default configuration was less exposed than upstream\u0027s. The other half concerns XFA rich text and is reachable whenever enableXfa is true, which is the default here. Do not assume the default configuration was safe.\n\n### Patches\n29.0.0-rc.3 cherry-picks Mozilla\u0027s fix (pdf.js 6.2.108) into both the stable and bleeding-edge engines. Only the latest release receives security updates.\n\n### Workarounds\nSet pdfDefaultOptions.enableXfa = false if you do not need XFA forms, and/or apply a CSP disallowing inline script-src.\n\n### Verifying. \nFrom 29.0.0 the package ships sbom.json and vex.json. The SBOM records the applied fix as a CycloneDX pedigree.patches entry; the VEX carries a resolved_with_pedigree statement so scanners stop flagging the engine\u0027s nominal version.",
  "id": "GHSA-w9hm-4m3m-fxmm",
  "modified": "2026-08-06T21:13:59Z",
  "published": "2026-08-06T21:13:59Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/stephanrauh/ngx-extended-pdf-viewer/security/advisories/GHSA-w9hm-4m3m-fxmm"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/stephanrauh/ngx-extended-pdf-viewer"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "ngx-extended-pdf-viewer bundles a version of pdf.js vulnerable to CVE-2026-16633"
}