Cory Fields, Bitcoin Core developer of MIT Media Labs, revealed a critical vulnerability in Bitcoin Cash (BCH) code in April. About this he wrote a post on the blog platform Medium.

According to the developer, this vulnerability could lead to fatal consequences for the fourth on the capitalization of the cryptocurrency. Despite the fact that the vulnerability was revealed several months ago, the developer only recently decided to make this information public.

He stated that the error could serve as a reason for separating blockchain into two incompatible chains, as well as making it impossible to carry out transactions. The Bitcoin Cash team rewrote part of the transaction confirmation code. However, in the new code, a critical error was made – it did not check a certain bit in the signature type. The vulnerability pointed out by Filsom as SIGHASH_BUG.

First Fields decided to let Bitcoin Cash developers know. However, he also thought that the usual channels of communication can lead to the leakage of information about the vulnerability, as well as its falling into the hands of scammers. He created anonymous channel GitHub through Tor and contacted BCH developers requesting a confidential method of communication.

At the end he suggested to developers to join forces to improve current tools, rules and procedures to avoid this situations in the future.

The information about the bug was spread very fast and caused the same questions about the open source code as before.

Earlier ForkLog reported that Bitcoin Cash developers activity went down to critical level. It should be reminded that the next BCH update is taking place in November this year, according to the road map.