Today, May 2, 2026, the Zcash Foundation just released Zebra 4.4.0, urging all node operators to upgrade immediately after fixing multiple security flaws, including several that could have split the network’s consensus.

The patch comes as April closes out as the worst month for crypto exploits so far. Blockchain security firm CertiK confirmed roughly $651 million in total losses across the industry.

What kind of Zcash flaws does Zebra 4.4.0 fix?

The update resolves five separate vulnerabilities in Zebra, the Rust-based Zcash node implementation built by the Zcash Foundation. Three of the bugs are consensus-critical, meaning that attackers could have exploited them and made Zebra nodes accept transactions that legacy zcashd clients…