Medium severity · published Dec 19, 2025
CVE-2025-66520
Foxit pdfonline.foxit.com Stored Cross-Site Scripting in Portfolio SVG Handling
5.4
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 7% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PD
pdfonline.foxit.com · Foxit Software Inc.
before 2025‑12‑01 · source: vendor
PE
Pdf Editor Cloud · Foxit
before 2025-12-01 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-66520
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-66520
Vendor Advisory
https://www.foxit.com/support/security-bulletins.html
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