A security researcher publicly disclosed a 0-day vulnerability in CometBFT (Cosmos consensus layer) that stalls nodes during block…

ahboyashreads (@ahboyashreads), Apr 21, 2026, 12:50 UTC

🚨🚨🚨 A security researcher publicly disclosed a 0-day vulnerability in CometBFT (Cosmos consensus layer) that stalls nodes during block synchronization, potentially disrupting chains securing $8B+ in assets without enabling direct theft Validators should avoid restarting nodes to prevent entering the vulnerable sync phase until patched https://x.com/p6rkdoye0n/status/2046563261014012215?s=46&t=2q9OLMlaobNlHLewOXT4uA

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