CVE-2026-91808 Foxit PDF Editor/Reader JPEG File Parsing Out-Of-Bounds Read Information Disclosure Vulnerability
An attacker can cause an application crash and potentially disclose memory contents by tricking a user into opening a malicious PDF file with inconsistent image metadata.
- 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-2026-91808?
CVE-2026-91808 is a medium-severity 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
A heap-based out-of-bounds read vulnerability exists in Foxit PDF Editor Reader’s handling of PDF image objects with inconsistent compression metadata. Insufficient validation during image decoding may result in an undersized buffer and an out-of-bounds read during rendering, causing an application crash.
Weakness: CWE-125
Which versions are affected by CVE-2026-91808?
It affects 2 products.
Products include Foxit Pdf Editor, Foxit Pdf Reader.
How do I fix CVE-2026-91808?
No fix has been published for CVE-2026-91808 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-91808 being exploited?
There is no known exploitation of CVE-2026-91808 in the wild and no public exploit code.
Other vulnerabilities in Foxit Pdf Editor
Sources
Also known as GHSA-gqv8-m8qw-cgrc.