CVE-2026-91797 Foxit PDF Editor/Reader Portfolio Directory Traversal Remote Code Execution Vulnerability
Attackers can execute arbitrary code by crafting PDFs with malicious attachment names that bypass directory restrictions in Foxit PDF products.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-91797?
CVE-2026-91797 is a high-severity path traversal vulnerability in Foxit Pdf Editor, published on 23 Sep 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
Foxit PDF Editor/Reader failed to validate the directory traversal path in the attachment file name, resulting in malicious attachments being able to be written to directories outside the expected secure area when the PDF is opened.
Weakness: CWE-73
Which versions are affected by CVE-2026-91797?
It affects 2 products.
Products include Foxit Pdf Editor, Foxit Pdf Reader.
How do I fix CVE-2026-91797?
No fix has been published for CVE-2026-91797 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-91797 being exploited?
There is no known exploitation of CVE-2026-91797 in the wild and no public exploit code.
Other vulnerabilities in Foxit Pdf Editor
Sources
Also known as GHSA-6389-9862-wmcf.