CVE-2026-91814
MEDIUM
NVD
CVSS Score
5.3
Severity
MEDIUM
Published
Sep 23, 2026
Vendor
unknown
Description
A signature validation vulnerability exists in Foxit PDF Editor/Reader’s handling of incrementally updated PDF documents. Changes to visible document content may not invalidate the existing signature, allowing attackers to alter signed content and potentially carry out content spoofing while the document continues to appear validly signed.