ZcashFoundation zebra-chain

• CVE-2026-104436 Low 3.7 Zebra before 4.5.0 CPU Amplification via Uncapped getblocks/getheaders Locator Length 0.3%
• CVE-2026-34202 Critical 9.2 Zebra node crash — V5 transaction hash panic (P2P reachable) 0.8%