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.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-01-20

Last Modified

2026-04-09

Generated

2026-07-06

AI Q&A

2026-01-20

EPSS Evaluated

2026-07-05

NVD

CVE-2025-66523

EUVD

EUVD-2026-3463

Affected Vendors & Products

Vendor	Product	Version / Range
foxit	esign	to 2026-01-16 (exc)

Helpful Resources

Exploitability

CWE

KEV

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.

Attack-Flow Graph

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.

Hi! I’m here to help you understand CVE-2025-66523. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70