CVE-2026-104435

Zebra zebrad 4.4.0 and zebra-script 6.0.0 are vulnerable to a consensus rule enforcement failure. The software fails to correctly apply the ZIP-244 consensus rule , specifically by accepting V5 transparent inputs signed with SIGHASH_SINGLE that do not have a corresponding output. This flaw allows...

PT-2026-104245

Zebra zebrad 4.4.0 and zebra-script 6.0.0 fail to enforce a ZIP-244 consensus rule, accepting V5 transparent inputs signed with SIGHASH SINGLE that lack a corresponding output. Attackers can broadcast crafted V5 transactions with more inputs than outputs that Zebra accepts but zcashd rejects,...

CVE-2026-41583 ZEBRA: Consensus Divergence in Transparent Sighash Hash-Type Handling

ZEBRA is a Zcash node written entirely in Rust. Prior to zebrad version 4.3.1 and prior to zebra-script version 5.0.2, after a refactoring, Zebra failed to validate a consensus rule that restricted the possible values of sighash hash types for V5 transactions which were enabled in the NU5 network...

PT-2026-35610

CVE-2026-41583: Consensus Divergence in Transparent Sighash Hash-Type Handling Summary After a refactoring, Zebra failed to validate a consensus rule that restricted the possible values of sighash hash types for V5 transactions which were enabled in the NU5 network upgrade. Zebra nodes could thus...

PT-2026-29168

--- CVE-2026-34377: Consensus Failure via Crafted V5 Authorization Data Summary A logic error in Zebra's transaction verification cache could allow a malicious miner to induce a consensus split. By matching a valid transaction's txid while providing invalid authorization data, a miner could cause...

GHSA-QP6F-W4R3-H8WG Zebra node crash — V5 transaction hash panic (P2P reachable)

--- Remote Denial of Service via Crafted V5 Transactions Summary A vulnerability in Zebra's transaction processing logic allows a remote, unauthenticated attacker to cause a Zebra node to panic crash. This is triggered by sending a specially crafted V5 transaction that passes initial...

Zebra node crash — V5 transaction hash panic (P2P reachable)

--- Remote Denial of Service via Crafted V5 Transactions Summary A vulnerability in Zebra's transaction processing logic allows a remote, unauthenticated attacker to cause a Zebra node to panic crash. This is triggered by sending a specially crafted V5 transaction that passes initial...