CVE-2025-66519: Foxit pdfonline.foxit.com Stored Cross-Site Scripting in Layer Import Functionality

Published Dec 19, 2025
·
Updated

A stored cross-site scripting (XSS) vulnerability exists in pdfonline.foxit.com within the Layer Import functionality. A crafted payload can be injected into the “Create new Layer” field during layer import and is later rendered into the DOM without proper sanitization. As a result, the injected script executes when the Layers panel is accessed.

Affected Software

2 affected components
Foxit pdfonline
Foxit PDF Editor cloud<2025-12-01

Event History

Dec 19, 2025
CVE Published
via MITRE·07:27 AM
Data Sourced
via MITRE·07:27 AM
DescriptionSeverityWeakness
Data Sourced
via NVD·08:15 AM
DescriptionSeverityWeaknessAffected Software
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Frequently Asked Questions

1

What is the severity of CVE-2025-66519?

CVE-2025-66519 is classified as a medium severity stored cross-site scripting (XSS) vulnerability.

2

How do I fix CVE-2025-66519?

To fix CVE-2025-66519, ensure that proper input validation and output sanitization are implemented in the Layer Import functionality.

3

What is the impact of CVE-2025-66519?

The impact of CVE-2025-66519 allows an attacker to inject malicious scripts that can be executed in the context of another user's session.

4

Is CVE-2025-66519 specific to certain versions of Foxit pdfonline?

Yes, CVE-2025-66519 affects Foxit pdfonline but specific version details are not disclosed.

5

How can users protect themselves from CVE-2025-66519?

Users can protect themselves from CVE-2025-66519 by avoiding untrusted inputs and being cautious with content created via the Layer Import functionality.

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