CVE-2026-91814

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...

CVE-2026-91814

Foxit PDF Editor/Reader is vulnerable to a signature validation vulnerability within its handling of incrementally updated PDF documents . The root cause is that modifications to visible document content may not invalidate the existing digital signature. This allows an attacker to alter signed co...