CVE-2026-104434: Zcashfoundation Zebra

Medium severity, CVSS 6.5. EPSS: 0.3% chance of exploitation in the next 30 days.

ZcashFoundation Zebra zebra-rpc before 8.0.0 and zebrad before 4.5.0 contain a reachable assertion in the z_listunifiedreceivers RPC handler, which calls expect() on Sapling receiver parsing that fails for Unified Addresses carrying invalid Jubjub points. Authenticated RPC clients can submit such an address to abort the zebrad process, repeatably keeping the node offline.

Affected products

• Zcashfoundation Zebra: before 8.0.0 (fixed in 8.0.0); before 4.5.0 (fixed in 4.5.0)

Published 2026-10-02. Last modified 2026-10-02.