Vulnerability · Published Dec 19, 2025 · Assigned by Foxit
CVE-2025-66520Foxit pdfonline.foxit.com Stored Cross-Site Scripting in Portfolio SVG Handling
Medium 6.3
In plain English
A medium-severity cross-site scripting in pdfonline.foxit.com from Foxit Software Inc.. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 8% of all known vulnerabilities).
Official description
A stored cross-site scripting (XSS) vulnerability exists in the Portfolio feature of the Foxit PDF Editor cloud (pdfonline.foxit.com). User-supplied SVG files are not properly sanitized or validated before being inserted into the HTML structure. As a result, embedded HTML or JavaScript within a crafted SVG may execute whenever the Portfolio file list is rendered.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Foxit Software Inc. | pdfonline.foxit.com | before 2025‑12‑01 |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N