CVE-2026-91814
Medium
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.
SeverityMedium
CVSS5.3
Exploit probability—
ProductFoxit Pdf Editor
PublishedSep 23, 2026
First seenSep 23, 2026
Weakness typeCWE-347CWE-347
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| foxit pdf_editor | v ≤ 13.2.5.63482, 14.0.0.33046 ≤ v ≤ 14.0.7.33751, 2023.1.0.15510 ≤ v ≤ 2023.3.0.23028, 2024.1.0.23997 ≤ v ≤ 2024.4.1.27687, 2025.1.0.27937 ≤ v ≤ 2025.3.0.35737, 2026.1.0.36452 ≤ v ≤ 2026.2.0.39747, v ≤ 13.2.2.63349, 14.0.0.68868 ≤ v ≤ 14.0.7.69441, 2023.1.0.55583 ≤ v ≤ 2023.3.0.63083, 2024.1.0.63682 ≤ v ≤ 2024.4.1.66479, 2025.1.0.66692 ≤ v ≤ 2025.3.0.69570, 2026.1.0.70169 ≤ v ≤ 2026.2.0.72029 | — |
| foxit pdf_reader | v ≤ 2026.2.0.39747, v ≤ 2026.2.1.39815 | — |
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