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+---
+"wrangler": patch
+---
+
+fix: kv:key put binary file upload
+
+As raised in https://github.com/cloudflare/wrangler2/issues/1254, it was discovered that binary uploads were being mangled by wrangler 2, whereas they worked in wrangler 1. This is because they were read into a string by providing an explicit encoding of `utf-8`. This fix reads provided files into a node `Buffer` that is then passed directly to the request.