Decred Releases Mandatory Security Patch for Critical Consensus Vulnerability

A consensus-layer flaw is the most serious class of bug a chain can face, since it threatens the shared state every participant relies on, not just individual wallets. The significance here is less the fix itself than the fact that the issue was disclosed and patched rather than exploited, though the item gives no indication of whether it was found internally or externally. The open question is how quickly node operators actually upgrade, since a mandatory patch only restores integrity once enough of the network has applied it.