ZDI-26-720: Foxit PDF Reader activeDocs Missing Authorization Information Disclosure Vulnerability
Foxit PDF Reader activeDocs flaw can leak information if a user opens a malicious file.
ZDI advisory ZDI-26-720 describes a missing authorization issue in Foxit PDF Reader's activeDocs feature that can disclose sensitive information. Exploitation requires the victim to open a malicious file or visit a malicious page. ZDI assigned CVSS 4.7 and CVE-2026-91788. Active exploitation is not mentioned.
- ZDI-26-720 is a missing-authorization flaw in Foxit PDF Reader activeDocs.
- Attackers can disclose sensitive information after user interaction.
- ZDI rated the issue CVSS 4.7; CVE-2026-91788 is assigned.
- No in-the-wild exploitation is reported.
- CVEs
- CVE-2026-91788
- Vendors
- Foxit
- Products
- Foxit PDF Reader
- Organizations
- Zero Day Initiative
Vulnerabilities mentioned
All| CVE | Vulnerability | CVSS | EPSS | Signals | Published |
|---|---|---|---|---|---|
| CVE-2026-91788 | Missing JavaScript Authorization in Foxit PDF Editor/Reader Exposes Other Open PDFs | 5.5 | — |
From the original article
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.
zerodayinitiative.com
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