Denial-of-Service Vulnerability in Firefox PDF Viewer

CVE-2026-113401

What is CVE-2026-113401?

A denial-of-service vulnerability exists in the PDF Viewer component of Firefox, which can cause the application to become unresponsive. Users of affected versions may encounter performance issues or face crashes when viewing certain PDF documents. This vulnerability was addressed in Firefox version 158.0.1, where the development team implemented necessary fixes to enhance the stability and functionality of the PDF Viewer, ensuring a smoother user experience.

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