What is CVE-2025-66522?

CVE-2025-66522 is a medium-severity vulnerability in Foxit Pdf Editor Cloud, classified under Cross-site Scripting. CVSS score: 6.3/10. Published 2025-12-19.

How severe is CVE-2025-66522?

Medium severity. CVSS v3 base score is 6.3 out of 10.

XSS in Foxit Pdf Editor Cloud

CVE-2025-66522

A stored cross-site scripting (XSS) vulnerability exists in the Digital IDs functionality of the Foxit PDF Editor Cloud (pdfonline.foxit.com). The application does not properly sanitize or encode the Common Name field of Digital IDs before inserting user-supplied content into the DOM. As a result, embedded HTML or JavaScript may execute whenever the Digital IDs dialog is accessed or when the affected PDF is loaded.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.002 (4.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N.

Affected products

Foxit Pdf_editor_cloud
Foxit Software Inc. Pdfonline.foxit.com — versions before 2025‑12‑01

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

14984358-7092-470d-8f34-ade47a7658a2 (Vendor Advisory)

Frequently asked questions

What is CVE-2025-66522?: CVE-2025-66522 is a medium-severity vulnerability in Foxit Pdf Editor Cloud, classified under Cross-site Scripting. CVSS score: 6.3/10. Published 2025-12-19.
How severe is CVE-2025-66522?: Medium severity. CVSS v3 base score is 6.3 out of 10.