This means that Zip bombs could only reach their true compression potential recursively.

Interestingly, Fifield found a way to get around this limitation.

This article shows how to construct a non-recursive zip bomb whose compression ratio surpasses the DEFLATE limit of 1032.

New Zip Bomb Compresses 4.5PB of Data Into 46MB File

While bulk_deflate outdoes these solutions, he notes that it isnt as effective in general use-cases.

With ZIP64, it is possible to develop a zip bomb of effectively infinite length.

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source: www.techworm.net