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Install Flash Video Downloader (FVD) ( ) with Firefox Nightly for Windows 10 圆4.

Critical Issues with Flash Video Downloader Crashing Firefox Nightly on Startup after XPI Self-Modification for Malware Injectionįlash Video Downloader (FVD) is updating its own XPI to version v16.3.8 unreviewed by Mozilla, circumventing Mozilla add-on review process (it seems for many releases over the past 6 months, over which period it completely stopped even attempting to make releases on ), hacking itself, to inject CSP rules and scripts into its manifest for malware domain .įlash Video Downloader (FVD) v16.3.8 installed in this way is causing Firefox Nightly to crash every time on startup.Įvery time I launched Firefox I ended up with another FVD_Downloader_Module.exe process spawned on Firefox startup, even when not using FVD, and those processes remain, even after closing Firefox (they may or may not remain or continue to pile up in cases when Firefox does not crash), so that I ended up with 12+ (and growing) number of FVD_Downloader_Module.exe processes running forever in the background.