ZDI-26-720: Foxit PDF Reader activeDocs Missing Authorization Information Disclosure Vulnerability
Published Sep 23, 2026
·Updated
This vulnerability allows remote attackers to disclose sensitive information on affected installations of Foxit PDF Reader. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The ZDI has assigned a CVSS rating of 4.7. The following CVEs are assigned: CVE-2026-91788.
Affected Software
1 affected component
Foxit PDF Reader
Event History
Sep 23, 2026
Advisory Published
via ZDI·05:00 AM
Data Sourced
via ZDI·05:00 AM
Description
Frequently Asked Questions
1
What must an attacker do to exploit this issue?
The attacker must induce the target to visit a malicious page or open a malicious file. Exploitation is remote, but it requires user interaction.
2
What is the impact if exploitation succeeds?
A successful attack can disclose sensitive information from an affected Foxit PDF Reader installation.
3
What severity has been assigned to this vulnerability?
ZDI assigned this issue a CVSS rating of 4.7.