CVE-2025-66523
Unknown Unknown - Not Provided
Cross-Site Scripting in Foxit Sign URL Parameters Allows Script Injection

Publication date: 2026-01-20

Last updated on: 2026-04-09

Assigner: Foxit

Description
URL parameters are directly embedded into JavaScript code or HTML attributes without proper encoding or sanitization. This allows attackers to inject arbitrary scripts when an authenticated user visits a crafted link. This issue affects na1.foxitesign.foxit.com: before 2026‑01‑16.
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Meta Information
Published
2026-01-20
Last Modified
2026-04-09
Generated
2026-06-16
AI Q&A
2026-01-20
EPSS Evaluated
2026-06-15
NVD
CVE-2025-66523
EUVD
EUVD-2026-3463
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
foxit esign to 2026-01-16 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
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Executive Summary

This vulnerability occurs because URL parameters are directly embedded into JavaScript code or HTML attributes without proper encoding or sanitization. This flaw allows attackers to inject arbitrary scripts that execute when an authenticated user visits a specially crafted link.

Impact Analysis

The vulnerability can lead to attackers executing arbitrary scripts in the context of an authenticated user, potentially leading to unauthorized actions, data theft, or session hijacking.

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