Decred: Approximately 2077.97 DCR was issued due to a vulnerability, and it has been decided not to roll back

Decred, a blockchain, stated that between August 16 and 17, its mainnet inflation vulnerability was exploited, resulting in the generation of approximately 2077.97 DCR. This vulnerability has existed in the consensus code since the mainnet launch in February 2016, stemming from improper edge case handling during the interaction between the regular transaction tree and the stake transaction tree, allowing double-spending inputs.

The vulnerability was reported on August 12 through a bounty program but was exploited before a fix could be implemented. Decred has decided not to roll back to minimize the impact on users. The issuance of approximately 2000 additional DCR does not affect the hard cap of 21 million coins and is far below the historical subsidies lost due to underissuance, which exceeded 215,000 coins. Currently, the team has developed additional double-spending monitoring services and plans to improve the emergency upgrade signaling mechanism.