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9 Jan 2020
14 Dec 2018
How to fix?
itext7 to version 7.1.5 or higher.
itext7 is a package which allows building of custom PDF scenarios for web, mobile, desktop or cloud apps in Java and .NET.
Affected versions of this package are vulnerable to Insufficient Signature Validation. It is possible to bypass the signature checker feature within
itext7 due to insufficient validation of the whole PDF document.