CVE-2026-91788: Foxit PDF Editor/Reader Missing Authorization Information Disclosure Vulnerability

Published Sep 23, 2026
·
Updated

When implementing the JavaScript interface, Foxit PDF Editor/Reader did not perform the attribute authorization checks required by the specification. As a result, a trusted malicious PDF could potentially access sensitive content from other documents within the same process and transmit it externally.

Affected Software

17 affected components
Foxit PDF Editor/Reader
All of the following
Any of the following
Foxit PDF Editor<=13.2.6.24111
Foxit PDF Editor>=14.0.0.33046<=14.0.7.33751
Foxit PDF Editor>=2023.1.0.15510<=2023.3.0.23028
Foxit PDF Editor>=2024.1.0.23997<=2024.4.1.27687
Foxit PDF Editor>=2025.1.0.27937<=2025.3.0.35737
Foxit PDF Editor>=2026.1.0.36452<=2026.2.0.39747
Foxit PDF Reader<=2026.2.0.39747
Microsoft Windows
All of the following
Any of the following
Foxit PDF Editor<=13.2.6.63484
Foxit PDF Editor>=14.0.0.68868<=14.0.7.69441
Foxit PDF Editor>=2023.1.0.55583<=2023.3.0.63083
Foxit PDF Editor>=2024.1.0.63682<=2024.4.1.66479
Foxit PDF Editor>=2025.1.0.66692<=2025.3.0.69570
Foxit PDF Editor>=2026.1.0.70169<=2026.2.0.72029
Foxit PDF Reader<=2026.2.0.72029
Apple macOS

Event History

Sep 23, 2026
CVE Published
via MITRE·07:51 AM
Data Sourced
via MITRE·07:51 AM
DescriptionSeverityWeakness
Data Sourced
via NVD·08:17 AM
DescriptionSeverityWeaknessAffected Software
Event
via NVD·08:17 AM

Frequently Asked Questions

1

What does an attacker need to exploit this issue?

The attacker would need to convince a user to open or interact with a malicious PDF that is treated as trusted. Exploitation also depends on the malicious document running in the same process as other documents containing sensitive content.

2

What information could be exposed?

A malicious trusted PDF could access sensitive content from other documents within the same process. The disclosed content could then be transmitted externally.

3

Is user interaction required?

Yes. The CVSS vector indicates that user interaction is required, and the described attack involves a user handling a malicious PDF.

Contact

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