Is CVE-2026-104434 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-104434?

CVE-2026-104434 has a CVSS v3 severity of MEDIUM (6.5).

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CVE-2026-104434

Description

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.