6.3

CVE-2025-66522: foxit software inc. pdfonline.foxit.com Cross-site Scripting

CVSS: 6.3v3.1MediumAnalyzed
Published 19-12-2025Last modified 19-12-2025
Open JSON

Vulnerability summary

CVE-2025-66522 is a medium (CVSS 6.3) Cross-site Scripting vulnerability in foxit software inc. pdfonline.foxit.com. EPSS estimates a 0.18% chance of exploitation in the next 30 days, higher than 7% of scored vulnerabilities.

Overall risk
25/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.3/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.18%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 19-12-2025
    PublishedVulnerability first disclosed.
  2. 19-12-2025
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.18%

Chance of exploitation in the next 30 days

Percentile

7%

Versus all other CVEs

30-day change

0.00 pp

From 0.18% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.18%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Foxit1 product
Foxit software inc.1 product

2 vendors · 2 products

References

1 links