Zcash Releases Critical Fixes After Node Crash and Network Risks

Zcash Patches Four Critical Vulnerabilities Across Both Full-Node Implementations

TLDR: Security researcher Alex “Scalar” Sol reported four Zcash vulnerabilities on April 4, 2026, via coordinated disclosure channels. A crafted Orchard transaction with an all-zeros randomized key could crash any reachable zcashd or Zebra node instantly. A turnstile accounting bug introduced in zcashd v5.10.0 could be triggered by routine peer-to-peer duplicate block headers. Mining pools ViaBTC, Luxor, F2Pool, AntPool, and Foundry all deploye…

Zcash Releases Critical Fixes After Node Crash and Network Risks

Zcash has revealed that the vulnerabilities were not exploited to affect the consensus chain and all user funds remain safe.