How to fix CVE-2025-66523?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.

CVE-2025-66523

MEDIUM

2026-01-20 14984358-7092-470d-8f34-ade47a7658a2

XSS

6.1

CVSS 3.1

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

CVE Published

Jan 20, 2026 - 07:15 nvd

MEDIUM 6.1

DescriptionNVD

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.

AnalysisAI

Technical ContextAI

Classified as CWE-79 (Cross-site Scripting (XSS)). 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.

Affected ProductsAI

URL parameters are directly embedded into JavaScript code or HTML attributes without proper encoding or sanitization

RemediationAI

Monitor vendor advisories for a patch. Implement output encoding and Content Security Policy headers. Restrict network access to the affected service where possible.

CVE-2025-66523 vulnerability details – vuln.today

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